C – Chances | Represent the number of opportunities he/she has to record an out. The formula for chances is: assists plus putouts plus errors.

PO – Put Outs | a fielder is credited with a putout when he is the fielder who physically records the act of completing an out – whether it be by stepping on the base for a forceout, tagging a runner, catching a batted ball, or catching a third strike. 

A – Assists | Awarded to a fielder who touches the ball before a putout is recorded by another fielder.

E – Errors | A fielder is given an error if, in the judgment of the official scorer, he fails to convert an out on a play that an average fielder should have made.

FLD% – Fielding Percentage | Answers how often does a fielder or team make the play when tasked with fielding a batted ball, throwing a ball, or receiving a thrown ball for an out. The formula is simple: the total number of putouts and assists by a defender, divided by the total number of chances (putouts, assists and errors).

DP – Double Play | occurs when two offensive players are ruled out within the same play. 

SBA – Stolen Bases Allowed (Pitcher and Catcher) | number of times a runner successfully stole a base.

CSB – Caught Stealing (Pitcher/Catcher) | number of times a runner was caught stealing. 

SBA% – Stolen Bases Against Percentage (Pitcher and Catcher) | refers to the frequency with which a catcher/pitcher throw out opposing baserunners who are trying to steal. The formula is simple: CSB divided by total stolen-base attempts (both successful and unsuccessful) against that catcher/pitcher. 

PB – Passed Ball (Catcher) | a catcher is given a passed ball if he cannot hold onto a pitch that, in the official scorer’s judgment, he should have, and as a result at least one runner moves up on the bases.

CI – Catcher’s Interference | when a catcher (or any other fielder) interferes with a batter at any point during a pitch, the batter is awarded first base if the catcher.