Two baseball players in blue jerseys and white pants stand on a pitcher 's mound .
Three baseball players in blue jerseys and white pants stand on a pitcher 's mound .
Two baseball players in blue jerseys and white pants stand on a pitcher's mound.
Three baseball players in blue jerseys and white pants stand on a pitcher's mound.
There can either be two or three baseball players.
There can either be two or three baseball players .