Rule 2 – Section 21 – INTERFERENCE — OFFENSIVE, UMPIRE, SPECTATOR
2-21-1 Offensive interference is an act (physical or verbal) by the team at bat:
- which interferes with, obstructs, impedes, hinders or confuses any fielder attempting to make a play; or
- when a runner creates malicious contact with any fielder, with or without the ball, in or out of the baseline; or
- a coach physically assists a runner during playing action.
2-21-2 It is umpire interference when he inadvertently moves so as to hinder a catcher’s attempt to throw, or when a fair ball touches an umpire as in 5-1-1f, or thrown ball as in 5-1-1g.
2-21-3 Spectator interference is an act by a spectator which impedes the progress of the game.
2-21-4 Follow-through interference is when the bat hits the catcher after the batter has swung at a pitch and hinders action at home plate or the catcher’s attempt to play on a runner.
2-21-5 Backswing interference is when a batter contacts the catcher or his equipment prior to the time of the pitch
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