The player's fielding percentage based on how many attempts and putouts they had compared to errors.

A put out is when a defensive player makes an out.

An assist is when a defensive player helps to make an out, but is not the player who actually made the out. For instance, the second baseman fields the ball and throws it to first base to get to runner out on a force. The second baseman gets an assist while the first baseman gets the putout.

The number of errors the player made.

The number of double plays in which the defensive player takes part.

The number of triple plays in which the defensive player takes part.

The number of fielding errors the player made.

The number of throwing errors the player made.

The number of balks from the player when defensively playing as the catcher. This is a Scorebook specific stat to help differentiate the talent of catchers and pitchers.