A pitcher is credited with an appearance if he pitches in a given game. When a pitcher enters the game -- barring an injury while warming up -- he must face at least one batter. When crediting pitchers with an appearance, it does not matter whether the pitcher started the game or pitched in relief.
Appearances can be tricky, because managers inevitably want to limit the total number of appearances by their pitchers to keep them fresh. But not every appearance is created equal. With this in mind, managers must determine when their pitchers are taxed and in need of a day off.
In A Call
"game," "game pitched"