In baseball, "on-deck" refers to a player who is next in line to bat.In a professional game, the batter who is on deck traditionally waits in a location in the foul territory called the on deck circle (there are two circles, each used by a team).Due to safety concerns, most youth fields have a caged "on deck" circle to protect a player from an errant ball.If … [Read more...] about On-Deck Batter vs In-The-Hole Batter