Definition – What is Power Finesse Ratio?
PFR compares the number of strikes and walks produced by the pitcher in relation to the number of innings they have pitched.
As the alternative to a strike or walk is the ball being in play, it compares the number of times that the pitcher (as opposed to the fielders) determined the outcome of an at-bat.
Formula – How to calculate PFR
PFR = (Strikeouts + Walks) ÷ (Innings Pitched + (Outs (Partial Innings) Pitched ÷ 3))
If a pitcher has made 207 strikeouts and 43 walks over 202 innings and 1 out pitched, then:
PFR = (207 + 43) ÷ (202 + (1 / 3))
PFR = 250 ÷ 202.33333
PFR = 1.235
This pitcher’s power finesse ratio is 1.235 – on average they make 1.235 strikeouts or walks for each inning pitched.
Sources and more resources
- Wikipedia – Power Finesse Ratio – Wikipedia entry on PFR.
- Rules on baseball and baseball statistics from Major League Baseball, NCAA (Baseball), NCAA (Softball), NCAA (Baseball and Softball), NFHS, and the International Baseball Federation.