Official Rules(view all)

7.15 Use of a Double First Base

Procedures for Use of a Double First Base: The double base may be used for first base only. The base must be rectangular, with two sides not less than 14 inches and not more than 15 inches, and the other two sides not less than 29 inches and not more than 30 inches. The longer sides shall face toward home plate and the right field corner. The outer edges shall not be more than two and one-fourth (2 ¼) inches thick, filled with soft material, and covered with canvas or rubber. Half the base shall be white (entirely over fair territory) and half shall be orange or green (entirely over foul territory). When using the double first base, the following rules must be observed:

(a) A batted ball that hits the white section of the double base shall be declared fair. A batted ball that hits the colored (orange or green) section without first touching or bounding over the white section shall be declared foul.

(b) Whenever a play is being made on the batter-runner, the defense must us the white section of the double first base.

NOTE 1: A play is being made on the batter-runner when he/ she is attempting to reach first base while the defense is attempting to retire him/ her at that base.

NOTE 2: If there is a play on the batter-runner, and the batter-runner touches only the white portion and the defense appeals prior to the batter-runner returning to first base, it is treated the same as missing the base. Penalty: Batter-runner is out.

(c) Whenever a play is being made on the batter-runner, the batter-runner must use the colored (orange or green) section on his/ her first attempt to tag first base. NOTE: On extra-base hits or other balls hit to the outfield when there is no chance for a play to be made at the double first base, the batter-runner may touch either the white or colored (orange or green) section of the base. Should, however, the batter-runner reach and go beyond first base, he/she may only return to the white section of the base. PENALTY: If there is a play on the batter-runner, and the batter-runner touches only the white portion and the defense appeals prior to the batter-runner returning to first base, it is treated the same as missing the base. If properly appealed, the batter-runner is out.

(d) When tagging up on a fly ball, the white section of the base must be used by the runner. One foot is permitted to extend behind or on the base into foul territory, as long as the front foot is touching the white section of the base. PENALTY: If properly appealed, runner is out.

(e) When leaving base on a pitched ball in Little League (Major) and below, the runner must maintain contact with the white section of the base until the ball has reached the batter. Runners may extend a foot behind the white portion of the base, but must maintain contact with the white section until the ball has reached the batter. PENALTY: See Rule 7.13.

(f) On an attempted pick-off play, the runner must return to the white section of the base only. This includes a throw from the pitcher, catcher, or any other player, in an attempt to retire the runner at the double first base.

(g) In Majors, Intermediate (50-70) Division, Junior, Senior, and Big League divisions, when the batter becomes a runner on a third strike not caught by the catcher, the batter-runner and the defensive player may use either the colored (orange or green) or the white section.

(h) Use of the double first base does not change any other rule concerning interference or obstruction at first base. (An errant throw into the three-foot running lane could still result in an obstruction call. Also, the batter-runner must still avoid interference with the fielder attempting to field a batted ball.)