Net run rate
The Net Run Rate (NRR) is a statistic used in cricket . It is used to differentiate between two or more teams in the event of a tie in the table. The NRR only makes sense in those forms of play in which the number of overs is limited, and is accordingly only used there. In international cricket, these are in particular one-day internationals and international twenty20 games, but not test matches , for example . In terms of its importance, it corresponds to the goal difference known from other sports such as football or handball .
calculation
Run rate
The net run rate is based on the "run rate". This is defined as the ratio of runs made to the number of overs in which these runs were scored.
Net run rate
Put simply, the net run rate in a game from a team's point of view is the run rate of its own innings minus the run rate of the opponent from his innings. The following formula follows:
particularities
In the case of over, it should be noted that an indication such as “26.1 Over” should not be read as 26 1/10, but rather, following the usual notation in cricket, as 26 1/6, since the number after the point always represents the balls of one indicating incomplete overs. That is why you cannot replace the point with a comma in German.
Should a team lose all ten wickets in their innings before the available overs have been completed, the overs actually played do not count towards the formula. Instead, the number of overs for which the innings was last scheduled in total is used. Otherwise, the batting team would absurdly benefit from all of their batsmen being eliminated early.
When using the Duckworth-Lewis Method (D / L), the actual runs and overs are not used for the first innings of the game. Otherwise it could happen, for example, that the losing team achieved a higher run rate in their innings than their opponent. If the game has been abandoned, but could still be scored due to the completed overs in the second innings, then the "par score" at the time of abandonment and the same number of overs that were completed in the second innings are used. If D / L was used earlier in the match and the game could then be played to the end, the target of the second batting team, reduced by one, and the total over number last available to the second batting team are used. As in all "normal" games, the runs and overs of the second batting team are included in the formula.
Use in group games
If two or more teams are to be differentiated in group games, the net run rate of each team is calculated from all games that have been played to the end to a result. Games that count as "No Result" are therefore not taken into account. In addition, all runs achieved in the completed group games are added, as are all overs. The same is done for the runs and overs of the respective opponents and from these four numbers the net run rate of each team is determined. So the average NRR is not calculated from all games. A higher net run rate then means a better ranking.
application
The net run rate has been used as a decision criterion at the Cricket World Cup since it was held in 1992 . It replaced the previously used run rate and thus not only took into account the performance of a team in hitting, but also in bowling.
References and comments
- ↑ a b Rules of the Game for One-Day-Internationals (Rule 21.9.2) ( Memento of the original from March 4, 2016 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 657 kB)
