How are cricket pitches prepared: a groundsman's week

A groundsman does not manufacture pace, turn or bounce. He moves water around a soil profile, and pace, turn and bounce are what the water leaves behind.

Everything in the shed serves that one job. The roller squeezes air out of wet soil so it dries hard instead of soft. The mower changes how quickly the top few millimetres give their moisture up to the sun. The covers decide whether water goes in, stays in, or gets driven back up to the surface. So when people ask how are cricket pitches prepared, the honest answer is not a list of machines. It is a fortnight of decisions about where the water in twenty-two yards of clay is sitting, and how fast it is allowed to leave.

Get that right and you have a hard, elastic slab that gives the ball back its energy. Get it wrong in either direction and you have a sponge or a biscuit. This piece is about the work. What the finished surface then does to a cricket ball is a separate subject with its own vocabulary, and the two are worth keeping apart, because the names people give pitches describe outcomes rather than methods.

The square is a rotation, not a pitch

No ground prepares one strip. A cricket square is a block of many pitches laid side by side, marked out, used and rested in turn across a season, which is the first thing separating cricket groundskeeping from every other pitch sport. A football groundsman maintains one surface continuously. A cricket groundsman maintains a dozen or more surfaces in different states of repair, and prepares one of them at a time to be perfect on a specific morning.

The rotation exists because a used strip is a damaged strip. Studs tear the ends, the ball marks the length, the surface loses cohesion where it has been hit repeatedly, and the whole thing needs weeks of watering, feeding and growth before it is worth playing on again. On a busy club square in a wet summer, recovery time and the fixture list are in permanent conflict, and the compromise usually shows up as a pitch prepared in five days that wanted ten.

Position on the square matters more than it looks. Strips near the middle tend to be the most used, the most consolidated over years, and the ones with the longest history of top dressing behind them. Strips at the edge get more wind, dry differently, sit closer to whatever drainage the square has, and can behave like a slightly different soil even though they are not. Groundstaff know their own square strip by strip in a way no visitor can, which is why an away analyst asking what the pitch will do is really asking which of fourteen distinct objects has been chosen.

Choosing which strip to prepare is itself a decision with weeks of consequence. A ground hosting a Test wants the best-consolidated block with the longest rest behind it. A ground hosting eight T20 matches in a fortnight has to plan the sequence in advance, because it will be reusing strips, patching ends between matches, and accepting that the last game of the block is played on something with a history.

Then there is the end of the season, which is when the actual construction happens. The square is scarified hard to strip out dead organic matter, the surface is levelled, fresh loam goes on as a top dressing, and grass seed knits the new layer into the old one over the autumn. That annual millimetre or two, repeated for decades, is the square. It is also the moment when a square can be quietly ruined, and that requires talking about layers.

Why a square takes years, and why the loam has to match

The material under a Test pitch is not topsoil. It is a selected loam with a high clay fraction, chosen because clay particles are flat, microscopically small, and bond to each other when they are wetted and then pressed together. That bond is what gives a pitch its strength. Sand and silt in the mix control how freely water moves through it and how readily the surface crumbles when it eventually dries.

Groundstaff assess loam by how it behaves rather than by reading a bag. The traditional field test is to roll a ball of wetted soil in the palm, let it dry, and see how hard it goes and how far it shrinks. A soil that dries into something you could break a window with has the clay to give pace. A soil that crumbles in the hand was never going to hold a length. Laboratory analysis reports the same property as a shrinkage figure, and squares are built and topped up to specifications that vary by country and by supplier, so numbers quoted for one ground tell you nothing useful about another.

The rule that matters is compatibility. Each year's top dressing has to be the same material, or near enough, as the layer beneath it. Two different loams stacked on each other shrink at different rates as they dry, and they will eventually part company along the join. What you get is a profile that looks immaculate and plays unevenly, because a ball landing here meets a properly bonded block and a ball landing a foot away meets a thin plate resting over a gap. That fault is invisible, effectively permanent, and takes years of renovation to work out. It is also why a groundsman will argue at length about a loam supplier the club committee considers interchangeable with a cheaper one.

Depth counts as much as composition. The prepared profile has to be deep enough that the ball's impact is absorbed by soil that is genuinely consolidated rather than by a thin hard crust over something soft. Test squares are built deeper than club squares for exactly that reason, and depth is why a well-made square delivers carry to the slips while a shallow one made of the same loam does not.

None of this can be hurried. A newly built square is unpredictable for several seasons, because the layers have not yet knitted, the grass has not developed a mature root system through the profile, and nobody yet knows how that particular block behaves in a hot week. Grounds that rebuild a square live with the consequences for a while, and the consequences usually get blamed on the groundsman.

T20 match40overs

ODI match100overs

Test match450overs

The T20 and ODI figures are the full complement of overs for a completed match. The Test figure is the scheduled minimum of 90 overs a day across five days, and Test matches often deliver more.

Show the numbers

Deliveries a single strip has to survive, by format

Item	Value
T20 match	40overs
ODI match	100overs
Test match	450overs

Water is the only variable, and the rest are ways of moving it

Here is the frame that makes preparation make sense. A groundsman has four instruments: water, weight, a blade and a sheet. Each one is a different way of controlling how much moisture sits in the profile and, just as importantly, where it sits.

Water goes in. Loam of this kind takes it up remarkably slowly, so soaking a pitch properly is a job measured in hours and repeated over days, applied as a fine spray rather than a hose in case the drops pit the surface. Water put on too fast runs off the top and produces a wet skin over dry soil, which is the worst of both.

Weight consolidates. Rolling is only possible while the soil is damp, because water is what lets particles slide past each other into a tighter arrangement, and the roller's job is to squeeze the air out from between them so the profile dries into a dense solid rather than a soft one.

The blade regulates evaporation. Grass shades the soil and slows drying enormously, so taking the height down is the fastest way to make a surface dry harder and quicker in the last days before a match.

The sheet decides everything else. A cover keeps rain out, keeps sun from taking moisture out, or in the right conditions drives moisture back up into the top layer.

Once the four instruments are seen as one control system for water, most of the arguments about pitch preparation answer themselves. Rolling a dry pitch achieves nothing, because there is no water to move the particles. Cutting grass off a surface that is already too dry accelerates a problem nobody can reverse, since the Laws forbid watering once a match has started. Leaving covers on a damp pitch in sunshine makes it wetter rather than drier, which surprises somebody every summer.

The preparation window, day by day

The shape of a preparation is always the same even though the calendar is not. Water goes in early and deep. Consolidation happens on the way down, as the profile passes through the moisture range where rolling works. Drying finishes the job. First-class and international preparations typically run to something like a fortnight, and club groundstaff routinely do a version of it in under a week, with the compression falling on the drying phase and therefore on how hard the finished surface plays.

1. 1Select the strip and clear itMark it out, brush the grass upright, remove debris and check the history of that strip. A pitch used six weeks ago is a different starting point from one that has rested all summer.
2. 2Wet the profile throughFine, repeated applications over a day or more so water reaches well down into the soil rather than sitting on top. This is the only chance to put moisture deep, and everything after it is a controlled removal.
3. 3Scarify and thin the grassVertical blades stand the grass up and take density out between the creases, so what remains is an even cover with soil visible through it rather than a mat.
4. 4Begin light, then heavy rollingAs the surface stops being sticky, rolling starts, working across, diagonally and lengthways in sessions rather than continuous hours. Roller weight rises as the soil dries down through the workable band.
5. 5Cut the height down in stagesThe mowing height comes down gradually rather than in one scalping pass, so the grass survives and the drying rate rises steadily.
6. 6Stop rolling, start dryingOnce the profile is too dry for the roller to do anything but grind the top, rolling ends. Covers and sun now do the work, and the groundsman is managing the drying rate rather than the moisture level.
7. 7Final cut and final rollOn the morning, a last cut sets the grass cover for the first session and a last roll seals the surface. Neither can be undone, and both are made with a forecast in one hand.

How many days each phase gets varies by ground, climate and equipment. The order does not. Rain moves everything and can force a switch to a different strip on the square.

Two features of that sequence deserve emphasis, because they are the parts casual explanations skip.

The first is that consolidation happens on the way down. There is no separate wetting day and rolling day. The roller follows the drying front, doing its most useful work while the soil is still plastic enough to rearrange but firm enough not to be pushed about, and that window opens and closes according to the weather rather than the fixture list. A groundsman who loses two days to rain in that window has lost the compaction, not merely the schedule.

The second is that the last three or four days are almost entirely about drying rate rather than water content. By then the total amount of moisture in the profile is roughly fixed. What remains to be decided is how it is distributed: whether the top few millimetres are still damp at eleven in the morning, or whether the drying has gone deeper and left a surface that will start breaking up early. That distribution decides whether the first session offers seam movement, and whether the surface starts gripping for the spinners on day two rather than day four.

What rolling actually does, and why timing beats passes

The roller is the most misunderstood object in the sport. Spectators think of it as a device for flattening. It is a device for removing air.

Soil is particles, water and gas. Compaction is the process of expelling the gas so the particles sit closer together, and water is the lubricant that lets them slide into that arrangement. Every soil has a moisture state at which a given amount of compactive effort produces its densest result. Wetter than that and the water itself is taking up space and carrying the load, so pressing harder only pushes soil sideways. Drier than that and there is too little water for particles to move at all, so the effort goes into crushing the surface instead of packing it.

1. 1Load arrivesThe drum's weight is concentrated on a narrow contact strip, and pressure travels down into the profile rather than only across the top.
2. 2Water films let particles moveIn damp soil, thin films of water around each particle act as a lubricant, letting the clay plates slide and re-orient instead of locking against one another.
3. 3Air is expelledPore space between particles collapses as they pack closer and the trapped air is squeezed out. This is the actual work, and it is the part nobody can see.
4. 4Plates align and bondFlat clay particles end up lying parallel, face to face, which is the arrangement that gives the profile its strength once it dries.
5. 5The surface sealsThe very top closes, which slows evaporation from below and gives the finished pitch its skin. A sealed top is also why a rolled pitch dries more slowly than an unrolled one.
6. 6Too dry, and it shears insteadWith no water to lubricate, the same pass grinds the top into loose grit and can slide one horizontal layer over another, leaving a weakness the ball will find on day four.

This is why a groundsman watches the soil rather than the clock. The same roller on the same strip produces a hard, true surface on Tuesday and damages it on Friday.

Three practical consequences follow.

Weight is chosen for the moisture state, not for ambition. Starting on wetter soil with something heavy drives compaction deeper, which is what produces bounce with real depth behind it, while a light roller on the same soil only tidies the top. As a strip dries, the useful weight comes down rather than up, and eventually the correct roller is no roller.

Duration is limited on purpose. Rolling is done in sessions of tens of minutes rather than for hours at a stretch, partly because the returns fall away sharply once the soil has reached the density that effort can achieve, and partly because a roller parked on live grass for hours kills the roots holding the surface together. Groundstaff watch the drums as well. Soil picking up on the roller means the strip is too wet to be rolled at all, and drums that come off completely dry usually mean the moment has passed.

Direction is varied. Across, diagonally and lengthways, because a profile compacted in one direction only consolidates unevenly, and the ball will eventually find the difference.

There is also a limit that money cannot buy past. Beyond a certain point, more weight on a dry pitch does not make it harder, it makes it shorter-lived, because the top is being pulverised rather than packed. That is the honest answer to the perennial suggestion that a groundsman could simply use a bigger roller.

Grass on a pitch is a moisture regulator first

Commentary treats grass cover as a seam-bowling variable, and that is the least of what it does during preparation.

Live grass holds water in the top layer by shading it, and roots hold the surface together so it wears rather than disintegrates. Cutting the height is therefore the fastest and least reversible way of changing how a pitch will play, because it changes the drying rate and the strength of the surface at the same time. Which is why the final cut on the morning of a match is treated as a serious decision rather than as presentation.

Height comes down gradually across the preparation, in stages rather than in one pass. Agronomic practice is to remove no more than about a third of the leaf in a single cut, because a scalped plant sheds root mass, and root mass is what stops a surface breaking up on day three. Groundstaff also box off the clippings rather than letting them fly, because decomposing leaf builds thatch, and thatch is a soft organic cushion sitting between the ball and the soil. Thatch takes pace off a pitch as surely as underconsolidation does, and it is one of the commonest reasons a club square that looks superb plays dead.

Scarifying is the other half of the job. Vertical blades thin the sward, cut through creeping growth and stand the grass up so the mower takes it cleanly, and the target on a match strip is a covering thin enough to see soil between the plants. What is left is even, upright and short, which is what allows the same amount of grass to behave predictably along the whole length rather than gripping in tufts.

Grass is also why preparation is a seasonal discipline rather than a fortnightly one. Feeding, aeration, disease control and overseeding through the year decide whether there is any root system to work with in July. A groundsman who lost the sward to disease in May cannot conjure a Test pitch in August, whatever the roller does.

Covers protect a pitch, and they can also cook one

Covers do two opposite things, and the same sheet does both depending on when it goes on.

The obvious job is keeping rain off. Flat sheets, wheeled tunnel covers and hover covers all exist to stop water landing on a prepared surface and undoing a fortnight of drying in twenty minutes. The less obvious job, and the one that decides more matches than it should, is protecting the run-ups, because a soaked bowler's approach stops play just as effectively as a soaked pitch and takes longer to make safe.

The second job is regulating drying. Permeable materials laid on the surface slow evaporation in hot, windy weather, keeping the drying front moving down evenly instead of baking a crust over damp soil. The same materials go on overnight to keep dew off a finished strip, and dew management is a genuine preparation task rather than a detail, particularly in day-night cricket where moisture arriving in the evening changes the shape of the whole match.

Then there is sweating, which is the version that catches people out. Leave a sealed sheet flat on a damp pitch in warm sun and you have built a still. Moisture evaporates from the soil, condenses on the underside of the cover and drips back onto the surface. The soil under the sheet does not dry, and the top of it can get wetter, while everyone looking at a sunny ground assumes the opposite is happening. Historically this was the reliable way to produce a lively, unpredictable surface, and it is why groundstaff and umpires think carefully about how long the covers stay on once the weather clears.

Full covering of pitches in international cricket removed the most extreme version of that, the drying wet surface that used to make batting close to impossible. It also changed what preparation means. A groundsman with covers is managing a system he controls. A groundsman without them is managing the sky.

Run-ups, footholes and the parts nobody photographs

The prepared strip is a small fraction of the work. Bowlers' run-ups have to be firm, level and grassed enough not to cut up, and they sit on ordinary outfield soil rather than on the square, so they drain differently and they take the punishment of a fast bowler landing repeatedly on the same square foot. Preparing a ground for a major match involves as much attention to the approaches and the outfield as to the twenty-two yards, and the outfield has its own effect on the cricket, because a dry abrasive surface roughs one side of the ball up far faster than a lush one, which is where the condition of the ball starts to matter more than the surface.

During a match the groundstaff's remit narrows sharply, and Law 10 sets out exactly what they may do.

• 7Minutes of rolling before an innings, at most
• 1Times the pitch is mown per day of a multi-day match
• 0Litres of water permitted on the pitch mid-match
• 10The Law that governs all of it

From Law 10 of the Laws of Cricket, which covers preparation and maintenance of the playing area during a match. Competition playing conditions add to this and do not remove it.

Those four numbers explain more about in-match pitch behaviour than any amount of speculation. The batting captain may ask for the roller before an innings and before each day's play, up to seven minutes, and that request is the only lever either side gets to pull on the surface itself. The pitch is mown before play on each day where conditions allow, so grass cover is maintained rather than restored. Watering is not permitted at all, which is why a Test pitch is a one-way process from the first ball onwards.

Footholes are the exception that keeps the game safe. Bowlers' footholes are repaired and dried by the groundstaff under the umpires' supervision, using sawdust or similar material, and filling or returfing them is allowed at the close of play. That maintenance exists for footing rather than for fairness, and it is deliberately limited, which is why the rough outside a right-hander's off stump on day four is still there for a left-arm spinner to aim at instead of being tidied away overnight.

Five days, one day, twenty overs: the same square, three different jobs

Format changes the target, and the target changes the water.

A Test surface has to do something difficult: hold together for five days while changing gradually. That means moisture deeper in the profile, a real grass cover to bind the top, and consolidation with depth behind it. The intention is a surface offering a little in the first session, playing at its best on days two and three, and breaking down honestly rather than collapsing. Prepared well, it produces the sequence that makes the toss a serious decision in the long form and a lesser one elsewhere, a subject with more nuance in it than the coin suggests.

A one-day pitch is prepared to skip the first chapter. Withholding water for a day or two longer than a Test preparation, and letting the top dry harder before the start, produces something closer to what a Test surface would be on its second morning: true, quick enough, and without the early seam movement. That is a deliberate bias towards batting, and it is why the same square can host a Test that seams on Thursday and a one-dayer that does not, three weeks apart.

A T20 surface has to be at its best for about three hours and then survive being played on again next week. Preparation is drier, harder and shorter in the grass, with consolidation aimed squarely at pace and bounce rather than at longevity, and with an eye on evenness, because one ball keeping low in a twenty-over match distorts the entire game. Franchise tournaments add a scheduling problem Test grounds never face: several matches on the same square in quick succession, strips reused, ends patched between fixtures, and a rotation planned across an entire season rather than a fortnight. The surface for the last match of a block has usually been played on already, and that is a planning decision made months before anyone complains about it on television.

Ordinary cricket compresses all three into a week. A four-day county fixture, a Sunday one-dayer and a midweek T20 on the same square in eight days is a normal English summer, and the binding constraint is not skill or equipment. It is drying time.

Home advantage, and the point at which it becomes a problem

Cricket is close to unique in letting the home side's employee build the playing surface. Every argument about pitch doctoring starts from that fact, and no regulation dissolves it, because the alternative is neutral groundstaff at every venue on earth and nobody intends to pay for that.

What a board can legitimately ask for is a preparation brief with enough notice to be achievable. Less grass. A drier finish. More time under covers. Longer in the rolling phase. These are instructions about method, they have to be given weeks out rather than on the eve of a match, and preparing a surface that suits your own bowlers is as old as touring cricket. It is home advantage of the same species as a rugby side that plays on a heavy pitch in February.

The shading into something else happens on two axes rather than one. The first is safety. A surface with unpredictable bounce because the profile was never properly consolidated is not a tactical choice, it is a hazard, and the fact that it also assists the home attack does not change what it is. The second is whether a result is possible at all. A pitch so lifeless that neither side can force anything is judged a failure by the same officials for the opposite reason.

Notice what is not on that list. A pitch that turns from the first session breaks no rule. It is an unsubtle use of a legal advantage, and the annual argument about it generates far more noise than the regulatory machinery does. The complaint that survives scrutiny is not that such surfaces exist but that the game's reaction to them has historically varied with which country prepared them.

The groundstaff sit in the middle of this and rarely get to speak. Their professional standing depends on the officials' report, their employer wants a result and a full fifth day of catering revenue, and the coach wants something specific. Those three pressures point in different directions more often than not, which is why home sides do not always get the surface they asked for.

Ratings, demerit points and what the system is actually for

Match officials assess the pitch and the outfield at international matches and file a rating. Poor ratings carry demerit points that accumulate against a venue over a rolling period, and a venue that gathers enough of them can be suspended from hosting. The wording of the scale, the points attached to each rating and the length of the window are all published by the ICC and have been revised more than once, so the current regulations are the only trustworthy source for the detail, and the mechanics of how a surface gets marked repay reading in full rather than in summary.

The purpose of the system is narrower than the arguments around it. It exists to catch dangerous surfaces and dead ones. It was never built to enforce a balance between bat and ball, or between seam and spin, and it makes no attempt to referee the taste of the cricket produced.

For groundstaff that distinction is the whole of their exposure. A pitch that produced a three-day finish and a lot of complaint is not a professional failure. A pitch that produced variable bounce because a layer had not bonded is, and everyone in the trade knows the difference even when the coverage does not.

Drop-in pitches are prepared somewhere else entirely

A drop-in is grown in a tray at a nursery, matured under conditions the groundstaff choose, then craned into a recess in the outfield before a match and lifted out afterwards. Multi-use stadiums need them, because a permanent square in the middle of a football or Australian rules ground is unworkable for most of the year.

The preparation is recognisably the same craft with two structural differences. There is a hard boundary under the soil at a fixed depth, so water cannot drain away indefinitely and roots cannot go deeper than the tray allows, which makes irrigation a more delicate business than on a native square. And the profile was built in one operation rather than accumulated in annual top dressings, so it is more uniform by construction, with none of the layering risk that haunts an old square, and none of the decades of consolidation either.

There is a second advantage that gets less attention. A nursery is an open field with good light, wind and access. The middle of a modern stadium is a shaded bowl with a roof edge, and growing decent grass in one has become genuinely difficult. Preparing away from the ground solves an agronomic problem, not merely a scheduling one.

The reputation drop-ins carry for producing bland surfaces belongs to an earlier generation of the technology. They are now prepared deliberately to seam, to turn or to do neither, and the sensible position is to judge the venue and the curator rather than the category.

When the weather in the last week destroys the plan

A preparation is a schedule laid over a forecast, and forecasts are wrong.

Rain in the rolling window is the worst case, because consolidation cannot be recovered later. The soil passes through the workable moisture band once on the way down, and if that coincides with three days of rain, the profile never gets the compaction it needed, so the finished pitch will be softer and shorter-lived than intended whatever happens afterwards. Groundstaff respond by switching to another strip on the square if one is far enough along, by extending the window when the fixture allows, or by accepting an under-prepared surface and saying so.

Cold is slower and just as damaging. Grass barely grows below a certain soil temperature, so a cold spring leaves early-season squares with thin cover and weak roots, and the surface breaks up faster than the same soil would in July. That is a large part of why early-season English cricket behaves the way it does, and it is climate rather than tradition.

Heat compresses everything. A hot dry week takes moisture out faster than the schedule assumed, so rolling ends earlier than planned and the finished surface is drier and more brittle than intended. The available tools are covers to slow the drying and a slightly higher final cut, and neither puts water back.

Wind is underrated. A dry wind pulls moisture out of a surface faster than sun alone, and it does it unevenly across a square, which is a reliable way to end up with a strip that plays differently at one end.

Water restrictions belong on the list too. A groundsman who cannot irrigate at the front of the window cannot produce a hard pitch at the end of it, and in a drought summer that is a constraint no amount of expertise gets around. The same goes for a club with poor mains pressure, which is the ordinary version of the same problem, and the reason a great deal of English club cricket is played on surfaces that were dried rather than built.

What the morning tells you about the fortnight

The parts of a preparation still visible on the first morning are worth learning to read, because they say what the groundstaff were trying to do rather than what anybody said in a press conference.

How the surface takes the light. A rolled, sealed top has a slight sheen and a smooth grain to it. A surface that looks matt and open has either not been rolled recently or has dried past the point where rolling could help.

Where the cut stops. Look at the difference in colour and height between the strip and the rest of the square. A hard boundary with a much shorter cut on the strip means an aggressive final mow and a surface intended to dry fast.

The colour at the ends compared with the middle. Even preparation produces even colour along the whole twenty-two yards. A darker band at one end usually means moisture that has not come out evenly, and that end will behave differently for the first hour.

Whether the covers were on at dawn. Dew on the outfield with a dry strip means the pitch was protected overnight and the top will be firmer than the morning suggests. A wet strip means the opposite, and the first hour belongs to the seamers.

Footholes at both ends. On a reused strip, look at how much repair has been done and how recently. Fresh material in the holes means the previous match tore them out, and they will go again quickly.

The rest of the square as a control group. The strips either side of the match pitch have had the same weather and none of the preparation. The difference between them and the middle is the visible record of what the roller, the mower and the covers actually achieved.

How the ball behaves in the first six overs. Everything above is inference. The keeper's glove height and whether edges carry to the cordon settle it inside half an hour, and no amount of squinting at a surface beats watching what happens to a cricket ball on it.

The last thing worth carrying away is a sense of proportion about the whole business. A pitch is a piece of agriculture that a sport has agreed to treat as an arena, produced by someone working with soil, weather and a fixture list that refuse to cooperate, and judged by an audience that sees the final three per cent of the process. When the differences between conditions in different countries get discussed as national character, what is being described is a fortnight of somebody's decisions about water, made under a sky nobody controls.