GUIDES · BETSLIP DOCTOR
Is an MLB batter automatically out whenever a batted ball touches the bat a second time?
No. Under Rule 5.09(a)(8), a batter is out when, after hitting or bunting a fair ball, the bat hits the ball a second time in fair territory; the ball is dead and runners may not advance. A fair ball that rolls against a dropped bat stays live when the umpire judges there was no intent to interfere. A separate legal-batter’s-box rule makes a ball that hits the batter or bat a foul ball when the batter is in a legal position and the umpire judges no intent to interfere. The rules also treat intentional deflection over foul territory and a whole thrown bat interfering with a defensive play differently.
For Fans and players trying to understand a second bat-ball contact or a dropped bat lying in the ball's path. · Updated
When the bat strikes the ball again
If the batter has hit or bunted a fair ball and the bat hits the ball a second time in fair territory, Rule 5.09(a)(8) makes the batter out. The ball is dead and runners may not advance.
That branch is different from a fair ball that rolls against a dropped bat. If the umpire judges there was no intent to interfere with the ball’s course, the ball remains alive and in play.
Legal position and intent can change the result
Rule 5.09(a)(7) points to Rule 5.04(b)(5): a batter’s legal position has both feet within the batter’s box, and the lines count as part of the box. If a fair ball hits the batter or bat while the batter is legally positioned and the umpire judges there was no intent to interfere with the ball’s course, the ball is ruled foul.
Intent matters in that specific judgment. The rule does not give a blanket no-intent exception to every bat contact.
Keep deflection and thrown-bat interference separate
Rule 5.09(a)(9), under the batter-is-out heading, covers a batter who intentionally deflects a ball continuing over foul territory while running to first: the batter is out, the ball is dead, and runners may not advance. The broken-bat Comment distinguishes two contacts. If a broken bat piece is in fair territory and is hit by a batted ball, or part of the broken bat hits a runner or fielder, play continues and no interference is called. If a batted ball hits a broken piece in foul territory, it is a foul ball. A whole bat thrown into fair or foul territory that interferes with a defensive player attempting a play is interference, whether intentional or not.
Three fictional contact branches
In one fictional play, after the batter hits a fair ball, the bat hits that fair ball a second time in fair territory; the batter is out, the ball is dead, and runners may not advance. In a separate play, a fair ball rolls against a dropped bat and the umpire judges no intent to interfere; the ball stays live. In another branch, a fair ball hits the batter’s bat while both feet remain legally in the batter’s box and the umpire judges no intent to interfere; it is ruled foul. For a broken bat, a broken piece in fair territory hit by a batted ball means play continues with no interference; if the batted ball hits a broken piece in foul territory, it is foul. By contrast, a whole bat thrown into fair or foul territory that interferes with a defender attempting a play is interference even if unintentional. Separately, if a batter running to first intentionally deflects a ball that continues over foul territory, the batter is out, the ball is dead, and runners may not advance.
Related questions
Does no intent always mean the ball stays live?
No. The legal-batter’s-box provision can make the contact a foul ball, and the whole-thrown-bat Comment has its own interference rule even when the throw was unintentional.
What happens when a ball rolls against a dropped bat?
The ball stays live if the umpire judges there was no intent to interfere with its course.
Does a broken bat automatically cause interference?
No. If a batted ball hits a broken bat piece in fair territory, or a broken piece hits a runner or fielder, play continues with no interference call. If a batted ball hits a broken piece in foul territory, the ball is foul. A whole bat thrown into fair or foul territory that interferes with a defensive player attempting a play is interference even if the throw was unintentional.