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Thrown Bat Rules

Also known as: thrown bat, throwing the bat, threw the bat, slinging the bat, tossing the bat after a hit

Definition

No, throwing the bat is not automatically an out under MLB rules. It becomes an out when the thrown bat interferes with a fielder trying to make a play, whether it was on purpose or not. A batter is also out if his thrown bat hits the catcher while he is catching a third strike, or a pitch with runners on base.

After a hit, many young players fling the bat as they run. That is a safety risk, and coaches work hard to stop it. Under MLB rules, it only matters on the field if the bat gets in the way of a play.

The comment to MLB Rule 5.09(a)(8) says a whole bat thrown into fair or foul territory that interferes with a fielder trying to make a play is interference. That holds whether it was intended or not. MLB Rule 6.03(a)(4) adds the catcher case.

A broken bat is different. If part of a broken bat is hit by the ball or hits a fielder, play goes on and no interference is called. Youth and high school leagues may have their own safety rules for thrown bats, so check your league's rulebook.

Tips by skill level

Beginner tip

After you hit the ball, drop the bat as you start to run. Do not toss it behind you.

Advanced note

Teach young players to let go of the bat with the bottom hand only after the swing, so it drops near the box.

Example

A hitter tosses his bat after a ground ball. It rolls in front of the third baseman as he fields the ball. The umpire calls interference, and the batter-runner is out.

Why it matters

Thrown bats can hurt catchers, umpires and teammates. Knowing when it costs an out gives players one more reason to drop the bat safely.

Common mistakes

  • Flinging the bat out of habit after contact
  • Thinking a thrown bat is always an automatic out
  • Confusing a broken bat with a thrown bat

Frequently asked questions

Is throwing the bat an out?

Not automatically under MLB rules. It is an out if the bat interferes with a fielder making a play, or hits the catcher on a third strike or with runners on.

What if a broken bat hits a fielder?

Play continues and no interference is called, under the comment to MLB Rule 5.09(a)(8). A whole bat thrown into a play is different.

What happens if my thrown bat hits the catcher?

Under MLB Rule 6.03(a)(4), you are out if he was trying to catch a third strike or a pitch with runners on base, unless a runner is put out on the play.

Sources

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