No-Step Balk

If there is a runner or runners, a balk shall be called for the following action by a pitcher:

While in a pitching position, throw to any base in an attempt to retire a runner without first stepping directly toward such base;

The pitcher, while touching the pitcher’s plate, must step toward the base, preceding or simultaneous with any move toward that base. The pitcher is committed, upon raising the lead leg, to throw to the base being faced, to second base or to the plate. When throwing or feinting a throw to a base not being faced, the pitcher must step immediately, directly and gain ground toward that base.

Note: If the pitcher throws to the first or third base player who is playing off the base, a balk shall not be called if the fielder moves toward the occupied base in an attempt to retire the runner.

The "spin" or "open" move to second base is legal if the pitcher raises the lead leg and immediately, with a continuous motion, steps directly toward second base. The pitcher need not throw.

The pitcher shall step "ahead of the throw." A snap throw followed by a step directly toward the base is a balk.

The pitcher may not prematurely flex either leg before stepping directly and throwing to first base.

The jump-turn move is legal if the pitcher’s free foot steps toward and gains ground toward the base to which the ball is being thrown. Otherwise, a balk shall be called.