The first-base coach stands in foul ground, just behind the first-base bag, and helps relay signals from the dugout to both batters and baserunners. First-base coaches often assist baserunners in picking the appropriate time to steal a base and alert baserunners as pitchers attempt to retire them via a pickoff throw. By rule, the first-base coach must stay within the designated coach's box on the first-base side of home plate prior to each pitch. The coach may leave said box to signal a player once a ball is in play, provided the coach does not interfere with the play.
