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.