ReliefStat The Home of Relief Run Average


What is RELIEF RUN AVERAGE® relief quotient?
RELIEF RUN AVERAGE® (abbreviated R.R.A.®) relief quotient is a baseball statistic that measures the ability of a relief pitcher to prevent inherited base runners from scoring.

What is an inherited base runner?
An inherited base runner is any player who is already on base when a relief pitcher enters the game.

How is R.R.A.® useful?
There are myriad baseball statistics that evaluate all aspects of the game. However, there is a gap in measuring the value of relief pitchers. When a relief pitcher enters the game with runners on base, he has the responsibility of preventing those runners from scoring. R.R.A.® is relevant to the task of preventing inherited runners from scoring.

What makes R.R.A.® a unique statisitc?
R.R.A.® doesn't just account for the number of inherited runners that a relief pitcher allows to score. It also accounts for the bases those inherited runners occupied, as well as the number of outs there were when that reliever entered the game. Taking those two factors into account yields significant data that reflects a reliever's ability to prevent the other team's inherited runners from scoring. For an explanation of how we derived the formula, click here.

How is R.R.A.® measured?
R.R.A.® is measured similarly to ERA. An R.R.A.® of zero indicates perfection. Higher numbers reflect lesser ability to hold inherited runners on base.


How is R.R.A.® calculated?
Go to the How to Calculate section.


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