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Infield fly rule

From Wikipedia, the free encyclopedia

An umpire calls an infield fly.
An umpire calls an infield fly.

The infield fly rule is a rule of baseball that treats certain fly balls as though caught, before the ball is caught, even if the infielder fails to catch it or drops it on purpose. The umpire's declaration of an infield fly means that the batter is out (and all force plays are removed) regardless of whether the ball is caught. The rule exists solely to prevent the defense from executing a double play or triple play by deliberately failing to catch a ball that an infielder could catch with ordinary effort.

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  • ✪ The Infield Fly Rule
  • ✪ NL WC: Umps call infield fly rule on Simmons' popup
  • ✪ Harold Reynolds Explains Baseball's Infield Fly Rule
  • ✪ PHI@NYM: Mets take advantage of infield fly rule
  • ✪ baseball rules infield fly


Let's take a look at the Infield Fly Rule, as it tends to be one of the things that people get most confused over in baseball. First, I want to explain how the rule is applied, and then I want to explain why it is necessary, or at least why it is used, as some people would argue that is not necessary. Basically the Infield Fly Rule is used to prevent the defense from turning a cheap double or triple play. In order for it to be in effect there needs to be runners on first and second base, or the bases need to be loaded, and there must be less than two outs. So if we have this situation with guys on first and second base, and one out and the batter hits a fly ball that in the umpire's judgment can be caught by an infielder using 'ordinary effort' then the umpire is supposed to yell out, "Infield Fly!" and when he yells this the batter is automatically out. So what this does is allows the base runners to stay on their bases and it removes the threat of then being doubled off. One of the most important things to note is that where the ball lands or would have landed it it had not been caught is irrelevant. It can be in the infield or it can be in the outfield as long as the infielder can get to the ball, in the view of the umpire, using ordinary effort. And this makes sense because if a high fly ball is hit just a few feet behind the second baseman he might drift back and be in the outfield, but he would have plenty of time to get under the ball and catch it using ordinary effort. On most players at the umpire calls infield fly the fielder will catch the fly ball regardless, but if they choose to take the risk of the base runners may attempt to run and if the fielder does not catch the ball or he drops that for whatever reason then the runners will move up a base as long as the fielder doesn't pick up the ball and throw them out before he gets to the next base. The batter will still be out regardless though. The runners can also tag up after the ball has been caught if they want to risk it with the ball being hit so shallow. If the ball is hit close to the foul line the umpire can yell out, "Infield Fly, If Fair!" And if the ball lands in fair territory then the batter would be out, but if the ball were to go foul it would just be the same as any other foul ball and the batter would not be out The exception to this would be if it is a bunt with two strikes that goes foul, because the infield fly rule applies to bunts too. So bunting a foul ball with two strikes would mean that the batter struck out; that would still take effect. That's how the Infield Fly Rule works and as I said it's there to prevent the defense from turning a double play. If the infield fly rule were not used an infielder could let a fly ball drop, quickly pick it up, flip it to second base and then throw on to first place before the runner got there. Or, if the ball was hit toward the third baseman, he could let it drop pick it up, step on third base, then throw to get the force out at second and possibly even for a throw on to first base to get the out there depending on the situation and how fast the runners are. Because without the Infield Fly Rule, if the ball were popped up, the base runners would probably have to assume that the ball will be caught by an infielder and they would stick close to the base that they were on which would then allow the defense to easily get that force out on the base that they were going to. Some people would argue that by allowing a pop up to drop like that defense takes the risk that all the runners could advance to the next safely and they will get no outs and others would say that this should also apply even if there is only a runner on first base because the defense could still easily turn that double play. But in any case, that is how the Rule works, so I will let you decide if it is good or bad, but for now though it seems like the Infield Fly Rule is here to stay.



A ball batted into the air subjects baserunners to a dilemma. If the ball is caught, they must return to their original base; if not caught, the batter becomes a runner and certain runners are forced to advance to the next base. Baserunners study the fielder and advance only far enough from the base to ensure that they can return safely. If a presumed catch becomes a non-catch, forced runners must run forward instead of back. This creates an advantage for the defense in intentionally failing to execute an easy catch, which the infield fly rule exists to remove.


The infield fly rule is explained in the Official Baseball Rules in two places:

  • Definitions of terms: Infield Fly
  • Rule 5.09 (Batter is out)

The rule applies only when there are fewer than two outs, and there is a force play at third base (i.e., when there are runners at first and second base, or the bases are loaded).[1] In these situations, if a fair fly ball is in play, and in the umpire's judgment is catchable by an infielder with ordinary effort, the umpire shall call "infield fly" (or more often, "infield fly, batter's out" or "infield fly if fair" when there is a chance of the ball drifting foul). When in effect, the batter will be out[2] regardless of whether the ball is actually caught. Umpires typically raise the right arm straight up, index finger pointing up and call to signal the rule is in effect.

If "infield fly" is called and the fly ball is caught, it is treated exactly as an ordinary caught fly ball; the batter is out, there is no force, and the runners must tag up. On the other hand, if "infield fly" is called and the ball lands fair without being caught, the batter is still out, there is still no force, but the runners are not required to tag up. In either case, the ball is live, and the runners may advance on the play, at their own peril.

An infield fly may be declared by any umpire on the field.

"Umpire's judgment"

The infield fly rule is a judgment call, as the rule states that "The judgment of the umpire must govern".[1] The rule directs the umpire to declare an infield fly immediately on determining that the play meets the criteria described above, solely based on the umpire's discretion. Since different umpires may have different definitions of what constitutes "ordinary effort," the rule may be applied differently depending on the umpire and game conditions.[3]

"Catchable by an infielder"

Any fair fly ball that could be caught by an infielder with ordinary effort is covered by the rule, whether or not it is in the infield, and whether or not an infielder catches it, or even attempts to catch it. For example, if an infielder retreats to the outfield in an effort to catch a fly ball, the infield fly rule may be invoked because the ball could have been caught by the infielder. Similarly, infield fly may also be called if an outfielder runs into the infield to catch a fly ball, if it could have been caught by an infielder with ordinary effort. It may be helpful to think of it as the "infielder fly rule". Specifically, the rule states an infield fly call should be determined by "whether the ball could ordinarily have been handled by an infielder, not by some arbitrary limitation such as the grass, or the base lines. The umpire must rule also that a ball is an infield fly, even if handled by an outfielder, if, in the umpire's judgment, the ball could have been as easily handled by an infielder."

"Ordinary effort"

The term "ordinary effort" considers all circumstances, including weather, lighting, positioning of the defense, and the abilities of the players involved in the play. A fly ball catchable with ordinary effort in Major League Baseball might not be in a junior high school game, due to the ability of the players involved.

Foul balls

If the fly ball is near the foul lines, the umpire is to declare "infield fly, if fair". If the ball is not caught and ends up foul (including if it lands fair and then rolls foul before passing first or third base without being touched by a fielder), the infield fly call is canceled, and the play is treated as an ordinary foul ball. In contrast, if the ball lands foul and then rolls fair before passing first or third base without being touched, the infield fly takes effect and the batter is out.[1]


Declarations of the infield fly rule are not included in the statistical summary of a baseball game and are not a separate category in player statistics.

A fielder who misplays an infield fly is not charged with an error because the batter is out through the infield fly rule. In fact, the fielder who should have caught an infield fly earns a putout. But a fielder who fails to touch an infield fly that then rolls foul may be charged with an error for letting the ball roll foul; the batter is not out, and the misplay prolongs the batter's time at bat.


The rule was introduced in 1895 by the National League in response to infielders intentionally dropping pop-ups to get multiple outs by forcing out the runners on base, who were pinned near their bases while the ball was in the air.[4] At that time, the rule only applied with one man out.

The current rule came into effect in 1901. It was amended in 1904 to exclude line drives, and in 1920 to also exclude bunts.[5]

2008 World Series

In the fifth game of the 2008 World Series between the Tampa Bay Rays and Philadelphia Phillies at Citizens Bank Park in Philadelphia, Pedro Feliz of the Phillies hit a pop-up to the right side of the infield with runners on first and second and one out, in strong rain and swirling winds, and the infield fly rule was not invoked. Umpiring crew chief Tim Tschida explained that "The infield fly rule requires the umpires' judgment to determine whether or not a ball can be caught with ordinary effort, and that includes wind" and that the umpires' determination was that in this case there was no infielder who could make the play with "ordinary effort".[6]

2012 National League Wild Card Game

In the eighth inning of the 2012 National League Wild Card Game between the St. Louis Cardinals and the Atlanta Braves, Andrelton Simmons of the Braves hit a pop-up into shallow left field with one out and men on first and second bases. Cardinals shortstop Pete Kozma, who was playing in normal position, ran out to left field to catch the ball while left fielder Matt Holliday, who was playing very deep in left, ran in to catch it as well. Although Kozma initially called to catch the ball, as the ball came down, he suddenly moved out of the way and the ball fell between him and Holliday. While it initially appeared that Simmons (the batter) had safely reached first base and the Braves had the bases loaded with one out, Simmons was called out because left field umpire Sam Holbrook had called "infield fly" just before the ball hit the ground, and the Braves now had runners at second and third with two out, instead of bases loaded with one out. The Braves did not score in the inning, and the Cardinals went on to win the game, 6–3, eliminating the Braves from the postseason.

After the call, angry Braves fans began throwing plastic bottles and other debris onto the field, causing the game to be delayed for nearly 20 minutes.[7] The game was played by the Braves under an official protest from their manager, but shortly after the game, Joe Torre, MLB executive vice president for baseball operations, denied the protest, citing umpire's judgment. Torre made the ruling immediately following the game (waiving the normal 24-hour review period) due to the importance of the game and the quick turnaround time before the next playoff game.[7][8][9] The ball landed 225 feet (69 m) from home plate. Between 2009 and 2012, there were six infield-fly rulings on balls that weren't caught, and the longest was measured at 178 feet (54 m), 47 feet (14 m) less than the ball Simmons hit.[10]

Additional details

Umpires' signals

As the infield fly rule is a special case, umpires signal one another at the start of an at-bat to remind one another that the game situation puts the rule into effect. A typical signal is to touch the brim of the cap so as to show the number of outs.[11][12]

Second base unoccupied

The infield fly rule is not in effect if there is no runner on second base. Provided the batter runs to first base, the greatest benefit the defense could achieve by intentionally letting the fly ball drop untouched is to force out the runner at second rather than the batter, resulting in a runner on first base either way. However, if the batter is significantly slower than the runner, the defense may elect to let the ball drop untouched and achieve the force play, replacing the runner at first base with the batter.

Risks for the defense are that the uncaught ball may roll away from the fielder, and any runner on third base can try to score but has the option of remaining on his base.

If the batter gives up on the play, the defense can achieve outs at second base and first base by deliberately letting the ball drop untouched.

Intentional drop rule

A related rule called the intentional drop rule (Rule 5.09(a)(12)) applies even when second base is unoccupied (so long as first-base is occupied), and applies even when the batted ball is a line drive or a bunt that could be caught on the fly. This rule likewise prevents a fielder from deliberately dropping a ball and thereby achieving a double or triple play. If an umpire invokes this rule, the drop is ruled a catch, the ball is dead, and no baserunner may advance. The rule is not invoked when a fielder plays a ball on a bounce that might have been caught on the fly, or a fielder lets the ball fall to the ground without catching the palm of the mitt, or, in the judgment of the umpire, the ball was mishandled and not cleanly caught.

Runner advancement

For the runners, an infield fly is little different from an ordinary fly ball. If an infield fly is caught, the runners must retouch their original bases ("tag up") after the catch before attempting to advance. If an infield fly is not caught, no tag up is required and the runners may advance at their own risk. The only difference is that the umpire's declaration that the batter is out removes force plays and gives runners the option of staying on the base.

The infield fly rule states that runners may advance "after the ball is touched". This rule governs the tag up if the infield fly is caught. The runner does not need to wait on base until the fielder achieves full control of the ball. There is no need to tag up at any time if the ball is dropped. There is no concept of tagging up under the intentional drop rule, as base advances are not allowed.

Hit runners

A runner hit by an infield fly while standing on a base is also protected from being declared out due to interference, unless this interference is deemed intentional (which appeared in the rules in 1940).[5]

Rule not declared

The rulebook definition of Infield Fly[1] says the umpire "shall immediately declare 'Infield Fly' for the benefit of the runners." However, sometimes they do not. As in the 2008 World Series game, there may be doubt as to whether the ball was catchable by an infielder with ordinary effort. If not called, the infield fly rule is not in effect. The same definition includes a comment that "The infield fly is in no sense to be considered an appeal play." This suggests that the batter cannot be ruled out retroactively to settle a debate that occurs after the play ends.[13] However, in Major League Baseball, the umpires are likely to correct their mistake if it leads to an unfair double or triple play.[14]

Batter passing another runner

In adult baseball, a fly ball usually reaches the fielder before the batter can run the 90 feet to first base. However, in youth baseball, the distance between bases is shorter, and in some youth leagues, the infield fly rule is not in effect.

In this case, a baserunning gambit can be used to avoid a double or triple play. A fast batter may reach first base before the pop fly reaches the fielder. If the fielder fails to catch the ball, then the batter runs toward second base while the runner originally on first base remains there. Under Rule 7.08(h), the batter is out for passing a preceding runner, and under Rule 7.08(c), this out removes the force so that other runners are able to remain on their bases.[15]

Legal theory

The infield fly rule was the subject of an article in a U.S. law journal. William S. Stevens was a law student in 1975 when he anonymously published The Common Law Origins of the Infield Fly Rule in the University of Pennsylvania Law Review.[16] The article was humorous but also insightful on how common law related to codified regulation of behavior. It has been cited in numerous legal decisions and in subsequent literature.[17]


  1. ^ a b c d "2.00 Definition of Terms". Official Baseball Rules. Professional Baseball Playing Rules Committee, Major League Baseball. Retrieved 2011-02-15.
  2. ^ "6.00 The Batter". Official Baseball Rules. Professional Baseball Playing Rules Committee, Major League Baseball. Retrieved 2011-02-15.
  3. ^ "Rule 2.00 Infield Fly and 6.05(e): Getting to Know the Rule". Close Call Sports. May 15, 2012.
  4. ^ Marazzi, Rich. "Baseball rules corner: many players unaware of tag requirements when Infield Fly rule is called", Baseball Digest, January 2004. Accessed September 30, 2007. "The batter is automatically declared out, but the runners may attempt to advance at their own risk. The purpose of the rule, instituted in 1895, is to protect runners from deceitful acts by members of the defense."
  5. ^ a b Infield Fly Rule at
  6. ^ Sheehan, Joe (October 28, 2008). "Unconventional Thinking: MLB makes right decision to cancel". Sports Illustrated. Archived from the original on November 4, 2012. Retrieved April 19, 2016.
  7. ^ a b "Wild-card game stopped after call". Associated Press/ESPN. October 5, 2012.
  8. ^ "STL-ATL Infield Fly (NL Wild Card): Why call was Correct". Close Call Sports. October 6, 2012.
  9. ^ Ray Glier (October 5, 2012). "Iffy call against Braves sets off Turner Field fans". USA Today. Retrieved October 10, 2012.
  10. ^ "Braves 'emptiness' after Wild Card loss; infield fly debated". Atlanta Journal-Constitution. October 6, 2012. Archived from the original on December 15, 2012.
  11. ^ "Infield Fly Rule - Signal". 2011-06-09. Retrieved 2017-11-02.
  12. ^ Steve Orinick. "The Infield Fly Rule". Retrieved 2017-11-02.
  13. ^ Infield Fly Rule on Rulebook Edge
  14. ^ Discussion at
  15. ^ "Minimax Solution of the Infield Fly"
  16. ^ "Aside, The Common Law Origins of the Infield Fly Rule," anonymous, 123 Univ. Penn. Law Review 1474 (1975).
  17. ^ E.g., "The Contribution of the Infield Fly Rule to Western Civilization (and vice versa)," Anthony D'Amato, Northwestern University Law Review, Vol. 100, No. 1 (2005)
This page was last edited on 26 September 2019, at 16:58
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