One-Day Cup Guide: Groups, Knockouts and Winners
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The One-Day Cup is the fifty-over competition contested by England and Wales's eighteen first-class counties. It runs in the second half of the summer, it carries List A status, and in most seasons it produces a champion nobody predicted, for reasons that have as much to do with the fixture list as with cricket.
This page is about how it actually works: the group structure, how the knockout places are filled, when the matches are played, which counties have won it, and how to follow it. The competition's much longer history — it descends directly from the knockout cup the counties launched in 1963 — is covered separately in the guide to the One-Day Cup and its odd modern role.
Eighteen counties, two groups
All eighteen first-class counties enter. They are split into two groups of nine.
Each county plays the other eight in its group once, giving eight group matches per team. There is no home-and-away arrangement inside the group, so the fixture list is asymmetric by design: a county might get four home matches one season and five the next, and the draw decides which of its strongest opponents it faces at home.
The groups are constructed with an eye to travel rather than seeding, which means they are not balanced for strength. In a competition of eight matches, a group containing three sides in poor form is worth something real, and this is one of the reasons the eventual champion is so often a surprise. The composition of the groups changes from season to season; the current allocation is set out in the guide to the One-Day Cup groups and teams.
Filling the knockout places
The knockout stage has been redesigned several times since the competition returned to fifty overs in 2014, and it is worth checking the current regulations rather than assuming.
The consistent principle is that finishing top of your group is worth a great deal. Group winners have generally been rewarded with a bye into the semi-finals, while the sides immediately behind them have played a quarter-final or eliminator round for the remaining semi-final places. In recent seasons the number of qualifying teams has been enlarged, so that a county finishing well down its group can still reach a knockout match.
That has two practical effects. It keeps more counties interested into the final week of the group stage, which is the point of it. It also means a side can lose four of eight group matches and still win the trophy, which is not a criticism so much as a description — knockout cricket has worked that way since 1963. The precise mechanics for the current season are set out in the guide to the One-Day Cup knockout rules.
The final has been staged at Trent Bridge in recent seasons, having previously been played at Lord's in the September-final era. It is a smaller occasion than the old cup finals, and a well-liked one.
The calendar, and the collision
The competition occupies the back half of the season. In 2026 it runs from 21 July to 20 September, with the group phase compressed into the first weeks and the knockouts trailing into September.
The significant fact about those dates is what they overlap. The Hundred, the eight-team hundred-ball competition, runs from 21 July to 16 August in 2026, which means the entire One-Day Cup group stage is played while The Hundred is on. The T20 Blast has already finished by then, and the County Championship runs either side of the block.
| Competition | 2026 window |
|---|---|
| County Championship | 3 April – 27 September |
| T20 Blast | 22 May – 18 July |
| The Hundred | 21 July – 16 August |
| One-Day Cup | 21 July – 20 September |
| Women's One-Day Cup | 11 April – 20 September |
The overlap is deliberate. The counties own the fixture list collectively, they agreed to give The Hundred the school-holiday weeks, and they still needed something to play in those weeks. The full picture of how the four men's competitions fit around each other is in the guide to English domestic cricket structure.
What a county's team sheet actually looks like
This is the part of the competition that most needs explaining to a newcomer, because the standard of cricket and the strength of the squads are two different questions.
Every England international is unavailable, either on national duty or drafted into The Hundred. So is most of the best county white-ball talent, for the same reason. A strong county might lose six, seven or eight first-choice players for the group stage.
What fills the gaps is a mixture: academy graduates getting their first professional white-ball cricket, second-team professionals, Championship specialists who rarely play the short formats, and one or two senior players who were not drafted and now have a month of cricket in which to make a point. Counties routinely field the youngest sides they will field all year.
The cricket that results is genuinely professional List A cricket, played hard, and frequently very good. What it is not is a national examination of England's best fifty-over cricketers. Both of those things are true simultaneously, and most of the argument about the competition comes from people insisting on only one of them.
The winners since 2014
Fifty-over cricket returned to the county competition in 2014. Since then the trophy has gone to ten different counties in eleven completed seasons.
| Season | Winner | Runner-up |
|---|---|---|
| 2014 | Durham | Warwickshire |
| 2015 | Gloucestershire | Surrey |
| 2016 | Warwickshire | Surrey |
| 2017 | Nottinghamshire | Surrey |
| 2018 | Hampshire | Kent |
| 2019 | Somerset | Hampshire |
| 2020 | Not played | — |
| 2021 | Glamorgan | Durham |
| 2022 | Kent | Lancashire |
| 2023 | Leicestershire | Hampshire |
| 2024 | Glamorgan | Somerset |
| 2025 | Worcestershire | Hampshire |
The 2020 competition was not played because of the pandemic.
Two patterns are worth pulling out of that table. Only Glamorgan have won it twice in the period, in 2021 and 2024. And Surrey lost three consecutive finals from 2015 to 2017, while Hampshire have appeared in four finals, winning one and losing three, including the rain-affected 2025 final that gave Worcestershire their first title.
The distribution is the competition's defining feature. Leicestershire's 2023 win was the county's first senior trophy in a generation. Glamorgan and Worcestershire are not clubs that win things often. In a domestic structure where the Championship and the Blast are dominated by a familiar handful of counties, this is the trophy that reaches the rest of them, and their supporters value it accordingly.
The cricket itself
Fifty-over cricket is a distinct discipline and this is the only place in England where it is taught professionally.
A batter has to build an innings across a hundred and twenty balls or more, which requires a different set of judgements from either format either side of it. A bowler has to structure ten overs — new ball, middle overs, death — rather than four. A captain has to manage a field over a long chase rather than defend a total for twenty overs. None of that is transferable from the T20 Blast or from four-day cricket in the County Championship.
The competition therefore does real developmental work whether or not the best players are in it, and England's selectors watch it. The middle-order batter who can pace a chase and the seamer who bowls a heavy line for ten overs both get noticed here, because there is nowhere else for them to be noticed. Whether the current arrangement is enough to sustain a fifty-over international side is a live question, and it connects directly to the argument set out in the guide to England's white-ball revolution — the generation that won the 2019 World Cup learned the format in this tournament and its predecessors, in seasons when it was the priority rather than the residual.
The playing conditions are standard List A: fifty overs, white ball, coloured clothing, fielding restrictions, and the same regulations that govern the international format. The detail is covered in the guide to county one-day cricket rules.
Where it is played
Group matches lean heavily on outgrounds and secondary venues, more so than any other men's competition. Part of that is scheduling — the main headquarters are often committed elsewhere in August — and part of it is that the competition's audience suits smaller grounds.
The result is that the One-Day Cup is where the festival venues get their cricket: school grounds, club grounds and out-of-town county venues, with temporary stands and deckchairs and a boundary you can sit on the grass beside. The tradition those grounds belong to is described in the guide to county outgrounds and festival weeks, and a shortlist of the best of them for this competition specifically is in the guide to the best One-Day Cup grounds. The knockouts and the final move to the larger venues, described in the English cricket grounds guide.
Following it
The competition is among the cheapest professional cricket in the country. Tickets are inexpensive, most group matches do not sell out, and children's admission is often nominal or free. Members of a county club get in on their membership.
Every match is streamed by the host county, generally free, with ball-by-ball scoring available through the counties and the board. Radio coverage is patchy for group matches and better for the knockouts. The practical detail of streams, apps and radio is collected in the guide to how to watch the One-Day Cup, and the wider question of following county cricket across formats is covered in the guide to how to watch county cricket. Final tickets go on sale separately and are covered in the guide to One-Day Cup final tickets.
Anyone new to English domestic cricket and choosing one competition to start with could do worse than this one. The matches finish in a day, the grounds are small enough to see what is happening, the tickets are cheap, and the cricket is the version of the game most people recognise from World Cups.
The women's competition
There is a separate women's One-Day Cup, played across a much longer window — from April to September in 2026 — and it is the senior fifty-over competition in the women's domestic structure, which was reorganised onto professional county lines after the regional-team era. Its place in that structure is described in the guide to women's domestic cricket in England.
For the rest of the English game, including the international season and the county competitions this one sits alongside, see the cricket in England hub.
Sources and method
This page is based on the England and Wales Cricket Board's competition regulations and published season calendars, including the 2026 domestic windows, together with the recorded list of champions and runners-up since fifty-over cricket returned to the competition in 2014. Group compositions, sponsor names and the number of teams qualifying for the knockout stage have all been revised more than once and are described in general terms here; the current season's regulations are the authority. The characterisation of squad availability during the August block is descriptive, based on the published overlap between the competitions, and involves no figures generated by our own statistical work.