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RulesMLB Umpire Manual

TRIPS TO THE MOUND

Rule 5.10(L):     Note regarding translators: Standards and On-Field Operations Regulation 2-2 (“Occupying the Bench”) provides that a full-time interpreter is permitted to enter the playing field during a game to translate for a coach or manager on an official visit to the pitcher as well as for the evaluation of an injury of…

RulesMLB Umpire Manual

ON-DECK CIRCLE

Rule 5.10(k): The next batter up must be in the on-deck circle, and this is the only player who should be there (i.e., not more than one player at a time). No other player of the side at bat will be permitted on the field except the batter, base runners, and coaches.

RulesMLB Umpire Manual

PITCHER CHANGING DEFENSIVE POSITIONS

Rules 5.10(d) Comment, 5.10(g): The purpose of this Comment is to prohibit a player from being a substitute for a pitcher more than once in the same inning. Thus, a player who starts (or enters the game during) an inning as a pitcher may substitute for any position(s) afterwards; however, he may not return to…

RulesMLB Umpire Manual

SIGNAL TO THE BULLPEN

Rules 5.10(b), 5.10(b) Comment: The manager must notify the umpiring crew that he is making a pitching change by clearly and unambiguously informing the home plate umpire of the pitcher who will be entering the game. Additionally, the manager should be mindful to signal for a left-handed pitcher with his left hand, or a right-handed…

RulesMLB Umpire Manual

MULTIPLE SUBSTITUTIONS AND DOUBLE-SWITCHES

Rule 5.10(b) Comment: When a manager makes two or more substitutions at the same time, the manager must, at the same moment, advise the plate umpire of the names of the substitutes, their defensive positions, and in what place each will hit in the batting order. The manager cannot give notice of one of the…

RulesMLB Umpire Manual

SUBSTITUTIONS

Rule 5.10: A player or players may be substituted during a game at any time the ball is dead. A substitution is completed and the player is considered as having entered the game when the manager or his designee notifies the plate umpire of the substitution. If no such notification is given to the umpire…

RulesMLB Umpire Manual

RETOUCHING BASES WHILE BALL IS DEAD

Rule 5.09(c)(2): While the ball is dead, no runner may return to touch a missed base or one he has left too soon after he has advanced to and touched a base beyond the missed base. A runner may return to a missed base (or one he has left too soon) during the  time the…

RulesMLB Umpire Manual

APPEAL PLAYS—APPROVED RULINGS

Rule 5.09(c): (1) Runner on first base, one out. The batter doubles. Runner on first rounds the bases and tries for home. On the play at the plate, the catcher misses the tag and runner misses the plate in sliding by. As the catcher begins to chase the runner to apply a tag, the batter-runner…

RulesMLB Umpire Manual

RUNNERS PASSING

Rule 5.09(b)(9): Runners passing are not protected from being called out in accordance with Official Baseball Rule 5.09(b)(9) by time being called or other dead ball situation (i.e. ground-rule double, home run, etc.) if they are still in the act of running the bases.

RulesMLB Umpire Manual

RUNNER TOUCHED BY INFIELD FLY

Rule 5.09(b)(7): Rule 5.09(b)(7) was amended in 2019 to clarify that when a runner is touched by an Infield Fly when he is not in contact with his base and before the ball has gone through, or by, an infielder, and no other infielder has a chance to make a play on the ball, both…

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