What is a balk in baseball?
Definition and Purpose
A balk is called when a pitcher makes an illegal motion intended to deceive baserunners. The rule exists to prevent pitchers from tricking runners into thinking they are throwing to a base when they are not, or from making a pickoff move that violates the rules.
Common balks include: starting a pitch and stopping, failing to step directly toward a base when throwing there, or dropping the ball while on the rubber. The penalty is that all runners advance one base, and the ball is dead.
When It's Called
A balk can only be called when there is at least one runner on base. If the bases are empty, the pitcher can fake a throw without penalty. The umpire signals a balk immediately, and play stops.
In Major League Baseball, balks are often controversial because they can be subjective. Umpires look for deceptive moves that violate the rule. In some youth or amateur leagues, balk rules may be relaxed or not enforced.
Examples and Impact
A classic balk is the 'fake to third, throw to first' move, which is illegal unless the pitcher steps toward third before throwing to first. Another is when a pitcher starts their windup and then stops.
Balks can change the momentum of a game by giving the offense a free base. They are relatively rare—typically a few per team per season in MLB—but can be costly in close games.
Common mistakes
- Thinking a balk can be called with no runners on base—it cannot.
- Believing any pickoff move is a balk—only illegal ones are.
- Assuming the penalty is just a ball; it's actually all runners advance one base.
