Official Rules(view all)

NFHS 1-2-3, 3-3-3

NFHS 1-2-3, 3-3-3/OBR Umpire Manual

An “on-deck” batter is the batter waiting to be the next hitter. An “on-deck circle” is to be provided on the playing field outside the dugout, and should be a safe distance from home plate. A team does not have to have a batter on-deck, but if they do, he should be warming up in or near the circle.

[MLB/MiLB require an on-deck hitter]