Required Run Rate Calculator

Subtract the current score from the target to get the runs still needed, then divide by the overs remaining. Chasing 286 on 142 after 30 of 50 overs means 144 runs from 20 overs, a required run rate of 7.20.

RRR is the required run rate, the runs per over the chasing side still needs to win. It is shown alongside CRR, the current run rate, and the gap between the two is the quickest read on how a chase is going.

No, it is one run higher. A side batting second has to pass the first innings total to win, because matching it exactly results in a tie. A first innings of 285 therefore sets a target of 286.

The target itself is recalculated under the Duckworth-Lewis-Stern method to account for the overs lost, and the required rate is then worked out from that revised target and the overs that remain.

Because the balls remaining fall while the runs needed stay the same. The effect grows as the innings shortens: with five overs left, one maiden over moves the asking rate far more than it would with thirty overs left.

The target itself is recalculated under Duckworth-Lewis-Stern rather than kept the same over fewer overs, so the asking rate is worked out from the revised target and the overs that remain. Simply dividing the original target by the shortened innings would be the old, discredited average run rate rule.

Yes, they are two names for the same figure: the runs per over a chasing side still needs. Commentators use asking rate more often in speech and scoreboards print RRR. Both are the runs still needed divided by the overs still left.

It depends far more on wickets and format than on the number itself. Eight an over with nine wickets standing in a T20 is routine; the same rate in an ODI with three wickets left is close to hopeless. The rate alone is indifferent to both, which is its main limitation.

Subtract the current score from the target. The required run rate becomes that figure directly, because one over remains. Needing 12 from the final over is a required rate of 12.00, and commentators switch from rate to a plain runs-per-ball count at that point because it is easier to follow.