What Is Net Run Rate?
In simple terms, net run rate (NRR) means the average runs scored per over by a team less the average runs scored per over against them. This remains the same for a single game or for the whole tournament except for the fact that when the calculation for the whole tournament is done, scores considered are also for the whole tournament similar to the weighted average of the run rates scored in each match less the weighted average of the run rates conceded in each match.
NRR scores are of two types, positive NRR and negative NRR. A positive NRR means that the team is scoring faster than its overall opposition while a negative NRR would mean that the team is scoring slower than the teams against it.
Technically NRR is a statistical method of analyzing teamwork and performance in cricket. It is the most critical approach to analyze which team will win when two or more teams are sailing on the same boat i.e., they have secured the same number of points.
In the present scenario when due to limited-overs, busy schedules, and packed calendars tie-breakers are almost impossible to be conducted, NRR comes as a savior to decide which team will level up.
After knowing what NRR is, you would be interested in knowing whether this NRR can be manipulated and has any of your favorite teams have done this, come let us figure it out together.
Can NRR Be Manipulated?
Yes, a team can artificially reduce its victory margin to gain an advantage in competition without disadvantaging their opponent too much.
This can be proved through the 1999 World cup where Australia reduced their victory margin because it wanted to get rid of New Zealand for which they required the West Indies to qualify with them.
Such practices are followed by the stronger teams so that weaker teams can qualify for the next round and they can win the next round easily by defeating the other team.
Formula To Calculate NRR
A team’s run rate (RR), or runs per over (RPO), is the average number of runs scored per over by the whole team in the whole innings (or the whole innings so far), i.e. run rate=total runs scored/total overs faced.
So if a team scores 481 runs off 50 overs then their RR is 481÷50=9.62.
Note that as an over is made up of six balls, each ball is 1/6 of an over, despite being normally written in cricket’s notation as .1 of an over.
So if they got that same score off 48.1 overs, their RR would be 481÷48 1/6=9.986
The concept of net run rate involves subtracting the opponents’ run rate from the team’s run rate. For two teams that have just played, the winning side will have a positive Match NRR, and the losing side will have a negative of this (i.e. the Match NRRs will be additive inverses, summing to zero).
A single match’s NRR is used very rarely, perhaps only after a team has played one match in a tournament, so their tournament NRR is the same as the match NRR.
To calculate tournament run rate total runs conceded in all matches/total overs bowled in all matches are subtracted from total runs scored in all matches/total overs faced in all matches.
The Exceptions To This Are
If a team is bowled out, the number of overs bowled is not used in calculations instead the full quota of overs entitled to the team is used (e.g. 50 overs for a One Day Internationals, and 20 overs for a Twenty20 match).
If a match is interrupted, Duckworth-Lewis revised targets are set, and a result is subsequently achieved, the revised targets and revised overs are used for Team 1’s innings (i.e. 1 run less than the final Target Score for Team 2, of the total number of overs allocated to Team 2), and the actual runs scored and overs used by Team 2 are used for Team 2’s innings (as normal).
If a match is abandoned as a No Result, neither the runs scored nor overs bowled are counted for the calculation.
If a match is abandoned but a result is decided by retrospectively applying Duckworth-Lewis, the number of overs that are assigned to a team is treated equally to the number of overs faced by Team 2.
Team 1 is credited with Team 2’s Par Score (the number of runs they would need to have reached from this number of overs and wickets lost if they were going to match Team 1’s score), and the actual runs scored are used by Team 2 for Team 2’s innings.
Wanna Get NRR Calculator-Excel App?
After learning how to calculate NRR you would be excited to try calculating the scores of your favorite teams so let me make it easier for you by suggesting an excel app that can calculate run rate and net run rate by just providing the scores of both the teams.
All you need to do is download the app, it is applicable for T20, IPL, and 50 Overs Cricket Match, enter the scores of both the teams and click on the command to get a net run rate.
How NRR Is Calculated-Example
Let’s understand the calculation of NRR with the help of an example:-
For example, consider the following:
Team A in their first match scored 300 runs for 6 wickets in 50 overs against Team B which scored 250 for 9 wickets in 50 overs, winning the match by 50 runs.
Team A in their second match against Team C scored 230 all out in 40 overs, losing the match by 6 wickets, as Team C chased down the target in 35 overs, scoring 231 for the loss of 4 wickets. how nrr is calculated in ipl.
Now let’s calculate Team A’s current total NRR in the tournament.
Team a’s Total Runs Scored In The Tournament
= 300 against Team B + 230 against Team C
= 530 Runs
Team A’s total overs faced in the tournament
= 50 against Team B + 50 against Team C (since Team A got all-out)
Team a’s Total Runs Conceded In The Tournament
= 250 against Team B + 231 against Team C
= 481 Runs
Team a’s Total Overs Bowled In The Tournament
= 50 against Team B + 35 against Team C
= 85 Overs
So, Team A’s total net run rate in the tournament
=[Runs scored in the tournament/Overs faced in the tournament]
=[Runs conceded in the tournament/Overs bowled in the tournament]
= [530/100] – [481/85]
= 5.3 – 5.65
= –0.35 (Tournament NRR)
Important Points To Consider
Since NRR doesn’t give accurate results, it has been criticized for not considering the wickets lost. Also as this system can be manipulated some critics don’t find it appropriate for the calculations.
Teams that do not play all the 50 overs are affected adversely by this system. It also lacks in correlating victory and close cells. The major concern that comes with its calculation is that people find it complex to understand and execute. This challenges the reliability and efficiency of the system. how nrr is calculated in ipl.