What is Net Run Rate (NRR)?
NRR is a method of breaking ties in multi-team tournaments like IPL, BBL, PSL, CPL, BPL & other League Tournaments. This is a simple method to understand but some of you may have a little misconception about this. It was used for the first time in the 1992 Cricket World Cup.
The first misconception may have in you that wickets do matter, but in calculating NRR it takes no account of wickets lost. Shocking & unfair right?
Let’s see then how does this calculation works-
In a simple terms the formula is-
NRR = (Average Runs Per Over Scored – Average Run Per Over Scored Against);
We’ll understand with a couple of example-
Assume we have two teams playing against each other; Team A & Team B.
In the first match Team A scored 180 run in their allotted over (20 overs)
Then the Run Rate of Team A will be (180/20) = 9.0
And in against Team B managed to score 140 then,
The NRR of Team A = 9.0 – (140/20) = 2.0 & if Team A gets nrr of 2.0 then Team B will get -2.0
Again, in the next match
Team A scored 120 in 20 overs & in against Team B Scored 110 in 20 overs
Then the Net run rate of Team A will be – (120/20) – (110/20) = 0.5 adding it to the previous nrr, after the 2nd match NRR of Team A stands 2.5 & for Team B -2.5
Let’s look into another example where Team A managed to score 120 in 20 overs and Team B has chased down 120 in 19.3 over.
This 19.3 will be calculated like,
So now The NRR of Team A will be
(120/20) – (120/19.5) = -0.15
For your complete understanding let’s look another example,
Where Team B bats first and able to score 160 in 20 overs & Team A managed to score 130 in just 14 overs with all wickets down.
Then,
The NRR of Team A should be (130/14) – (160/20) = 1.28 But is it fair?
They lost their all wickets in just 15 overs and 30 runs far. Here if any team lose their all wickets while chasing then the over will be taken as 20 in the place of 14,
Then the Original NRR will be,
(130/20) – (160/20)= -1.5
Let’s think of another situation,
Team A has scored 150 runs in 20 overs and while chasing that Run for ‘Team B’ rain started, at that moment Team B was in a position of 45 in 8 overs, but the rain wasn’t that heavy after a few minutes rain has stopped so the committee has revised the run to 85 in 11 over by DLS Method.
Now think Team B has chased that run, then what will be the NRR. As Team B has to chase 85 runs 11 overs that automatically Team A’s score will be 84 in 11 over.
NRR of Team A (84/11) – (85/11)= -0.09
We hope you’re clear now with NRR. If the match gets abandoned, in that case, NRR of that particular match will not be calculated.