Infield Fly Rule: When It Applies and Examples

The infield fly rule makes a batter automatically out on certain catchable pop-ups with runners aboard. It prevents fielders from deliberately dropping an easy fly to force multiple runners out. Here is how the call works in MLB.

What is the infield fly rule?

The infield fly rule is an automatic batter-out ruling on a qualifying fair fly ball that an infielder could catch with ordinary effort. It applies when first and second base are occupied, or the bases are loaded, with fewer than two outs.

The purpose is to remove the defense’s incentive to let an easy pop-up fall and start a cheap double play. The umpire evaluates whether the ball can be caught with ordinary effort, rather than whether someone eventually makes the catch.

Fans sometimes focus on where a pop-up lands. The better question is whether an infielder could have handled the ball with ordinary effort. A common question about infield fly rule is how this situation differs from a similar-looking example.

In practical terms, the ruling concerns the batter first. Treating the batter as out changes which bases are forced, while the remaining baserunners must still watch the fielders. This separation keeps the play understandable even when the ball is not caught.

When does the infield fly rule apply?

Four conditions matter: fewer than two outs; runners on first and second or bases loaded; a fair fly ball that is not a line drive or attempted bunt; and an infielder able to catch it with ordinary effort.

The rule can apply if the infielder drifts onto shallow outfield grass. It does not apply simply because a ball rises high, and it does not apply with only a runner on first. Umpires make a judgment call promptly, sometimes adding “if fair” when the flight could end foul.

In discussions of infield fly rule, the relevant detail here is the particular play and its rule conditions.

Spectators often assume every high pop-up near second base qualifies, but the runner configuration is a separate requirement. A common question about infield fly rule is how this situation differs from a similar-looking example.

Before predicting a call, look at the scoreboard for the number of outs and the location of runners. Only then consider the flight, whether a fielder can settle under the ball, and what the umpire signals. The order of those checks prevents a common mistake.

What happens after an infield fly is called?

The batter is out whether the eligible ball is caught or dropped. The ball stays live, so other action may continue and runners can be put out if they take risks.

On a caught infield fly, runners must tag up before advancing, just as they would after another caught fly. On an uncaught infield fly, there is no catch to tag up from, and runners may try to advance at their own risk.

The force created by the batter becoming a runner is removed by the automatic out. In discussions of infield fly rule, the relevant detail here is the particular play and its rule conditions.

A common scorekeeping puzzle is why a runner may move after a dropped ball even though the batter was already declared out. A common question about infield fly rule is how this situation differs from a similar-looking example.

Once the umpire signals the call, do not assume the action is finished. A throw to a base, a runner leaving early after a catch, or a ball rolling away can still matter. Scorers distinguish the batter's automatic out from later baserunner outcomes.

Does the infield fly rule apply on foul balls?

A ball that lands foul without being caught cannot produce an infield-fly batter out. If a qualifying pop-up is caught in foul territory, the batter is out because of the catch.

An umpire may announce “infield fly, if fair” while a ball drifts near a foul line. The conditional words matter: an uncaught foul ball is simply foul. If it settles fair and the other conditions are met, the batter is out under the rule.

In discussions of infield fly rule, the relevant detail here is the particular play and its rule conditions.

Confusion often comes when people treat the umpire’s early signal as proof that every possible landing point must lead to the same result. A common question about infield fly rule is how this situation differs from a similar-looking example.

Watch what happens at the foul line rather than treating the first call as permanent regardless of the ball's destination. A caught foul fly is an ordinary caught out, while an uncaught foul ball is not converted into a fair infield-fly out.

Can the infield fly rule apply in the outfield?

Yes. There is no fixed grass-line boundary for the infield fly rule. Ordinary effort by an infielder is the deciding standard.

A shortstop may settle beneath a pop-up on shallow left-field grass. That can qualify even if an outfielder also approaches. In contrast, a difficult running catch or a deep fly that an infielder could not handle routinely generally does not meet the standard.

In discussions of infield fly rule, the relevant detail here is the particular play and its rule conditions.

Viewers often treat the line between dirt and grass as a rulebook boundary, but it is not. A common question about infield fly rule is how this situation differs from a similar-looking example.

The name can mislead because the official standard is the fielder's ordinary effort. An infielder who retreats a short distance may still make the catch routinely; a difficult deep ball is different. The call rests on judgment, not geometry alone.

What does a real infield fly dispute show?

Reuters reported on October 6, 2012, that Atlanta’s Andrelton Simmons hit a popup that dropped in shallow left field, yet the umpire called him out under the infield fly rule.

The disputed ruling became a prominent example of how the ordinary-effort judgment can draw disagreement.

As reported by The Guardian in October 2012, the ruling followed a popup involving the Cardinals and Braves and prompted a protest. The case illustrates that the ordinary-effort judgment, not the precise patch of grass, is where disagreement often centers.

In discussions of infield fly rule, the relevant detail here is the particular play and its rule conditions.

When supporters argue that an outfielder was closer to the ball, they may be discussing a different question from the one the rule asks. A common question about infield fly rule is how this situation differs from a similar-looking example.

The disagreement in a famous game is a reminder that the rules can be correctly quoted while the umpire's application remains debated. A fair explanation distinguishes the text from the contested judgment on an individual ball.

Infield fly rule examples and quick decisions

Compare four plays: runners on first and second with one out and an easy fair pop-up means the rule applies; runner only on first means it does not; two outs means it does not; and a line drive means it does not.

Then assess whether the ball is fair, whether the catch would be routine, and what the runners do next. Never presume a dropped ball is automatically dead or that every runner has to remain on a base.

In discussions of infield fly rule, the relevant detail here is the particular play and its rule conditions.

New viewers often become more accurate by checking outs and occupied bases before following the fielder. A common question about infield fly rule is how this situation differs from a similar-looking example.

Use the examples as a checklist rather than a guarantee for unseen plays. Fielding difficulty and fair territory can require an on-field judgment; two outs or missing occupied bases remove eligibility regardless of how routine the catch looks.

What should you do next?

For the next pop-up, check outs, occupied bases, ordinary effort, and fair territory before deciding whether the infield fly rule applies. Then watch the runners because the ball stays live.

Frequently asked questions

Can an infield fly turn into a double play?

Yes, but the batter is already out; another runner can be retired through a separate play or a failure to tag after a catch.

Does the infield fly rule apply to a bunt?

No. A fly ball resulting from an attempted bunt is excluded.

Can a runner steal during an infield fly?

The ball remains live, so advancement is possible at the runner’s risk.

Who decides if a catch is ordinary effort?

The umpire makes that judgment based on the play.