Catch Probability expresses the likelihood for a ball to be caught by an outfielder based on opportunity time, distance needed, and direction. “Opportunity time” starts when the ball is released by the pitcher, and “distance needed” is the shortest distance needed to make the catch. Learn more about how direction is accounted for here. Read more about the details of how Catch Probability works here.
Outs Above Average (OAA) is the cumulative effect of all individual Catch Probability plays a fielder has been credited or debited with, making it a range-based metric of fielding skill that accounts for the number of plays made and the difficulty of them. For example, a fielder who catches a 25% Catch Probability play gets +.75; one who fails to make the play gets -.25. Read more about how Outs Above Average works here.
Qualifier: 1 fielding attempt per team game played.