In baseball, hit by pitch (HBP) is an event in which a batter or his clothing or equipment (other than his bat) is struck directly by a pitch from the pitcher; the batter is called a hit batsman (HB). A hit batsman is awarded first base, provided that (in the plate umpire's judgment) he made an honest effort to avoid the pitch, although failure to do so is rarely called by an umpire. Being hit by a pitch is often caused by a batter standing too close to, or "crowding", home plate.
The rule dates from 1884; before that, a pitch that struck the batter was merely a ball.
Per baseball official rule 5.05(b), a batter becomes a baserunner and is awarded first base when he or his equipment (except for his bat):
If all these conditions are met, the ball is dead, and other baserunners advance if they are forced to vacate their base by the batter taking first. Rule 5.09(a) further clarifies that a hit by pitch is also called when a pitch touches a batter's clothing.
In the case where a batter swings and the pitch hits him anyway, the ball is dead and a strike is called. If the batter does not attempt to avoid the pitch, he is not awarded first base, and the pitch is ruled either a strike if in the strike zone or a ball if out of the strike zone. Umpires rarely make this call. A famous instance of a non-hit by pitch was on May 31, 1968, when Don Drysdale hit Dick Dietz with a pitch that would have forced in a run and ended Drysdale's scoreless innings streak at 44. Umpire Harry Wendelstedt ruled that Dietz made no effort to avoid the pitch; Dietz proceeded to fly out, and Drysdale's scoreless streak continued to a then-record 58 innings.
A hit-by-pitch can also be called on a pitch that has first touched the ground before hitting the batter. Such a bouncing pitch is like any other, and if a batter is hit by such a pitch, he will be awarded first unless he made no attempt to avoid it (and he had an opportunity to avoid it).
A batter hit by a pitch is not credited with a hit or at bat, but is credited with a time on base and a plate appearance; therefore, being hit by a pitch does not increase or decrease a player's batting average but does increase his on-base percentage. A batter hit by a pitch with the bases loaded is also credited with an RBI per MLB rule 10.04(a)(2). A pitch ruled a hit by pitch is recorded as a ball in the pitcher's pitch count, since by definition the ball must be outside the strike zone and not have been swung at.
The rule awarding first base to a batter hit by a pitch was instituted in 1887.
Inside pitching is a common and legal tactic in baseball, and many players make use of brushback pitches, or pitches aimed underneath the chin, commonly referred to as "chin music", to keep players away from the plate. "Headhunter" is a common term for pitchers who have a reputation for throwing these kinds of pitches. However, throwing at a batter intentionally is illegal, and can be very dangerous. When an umpire suspects that a pitcher has thrown at a batter intentionally, but is not certain, a warning is issued to the pitcher and the managers of both teams. From that point on, any pitch thrown at a batter can cause the pitcher and the manager of the offending team to be ejected immediately from the game. Serious offenses such as a ball thrown at the head (called a beanball) can result in the immediate ejection of the pitcher, and the manager if he ordered the beanball, even without a warning. If the umpire is certain that the pitcher intentionally hit the batter with the pitch, the pitcher is ejected from the game with no warning.
Occasionally, if a player is acting rude or unsportsmanlike, or having an extraordinarily good day, the pitcher may intentionally hit the batter, disguising it as a pitch that accidentally slipped his control. Managers may also order a pitcher to throw such a pitch (sometimes called a "plunking"). These pitches are typically aimed at the lower back and slower than normal, designed to send a message more than anything else. The opposing team usually hits a batter in retaliation for this act. The plunkings generally end there because of umpire warnings, but in some cases things can get out of hand, and sometimes they lead to the batter charging the mound, bench-clearing brawls, and several ejections.
The all-time record for a player being hit by a pitch is held by Hughie Jennings, who was hit by 287 pitches between 1891 and 1903. The modern-era record is held by Craig Biggio of the Houston Astros, who had 285 as of the end of the 2007 season when he retired. Prior to Biggio, the modern-era record belonged to Don Baylor, who was hit 267 times.
The all-time single-season record also belongs to Jennings, who was hit 51 times during the 1896 season. Ron Hunt of the 1971 Montreal Expos was hit 50 times during that year, the modern-era record. The single-game record is three, held by numerous players.
The all-time record for pitchers is held by Gus Weyhing with 277 (1887-1901). The modern-era career pitching record for most hit batsmen is 205 by Hall-of-Famer Walter Johnson. The season record is 54 by Phil Knell in 1891, and the game record is six, held by Ed Knouff and John Grimes.Brady Anderson was the first player to be hit by a pitch two times in the same inning in an American League game. On April 25, 2014, Brandon Moss became the second when he was hit twice in the top of the 9th inning by Houston Astros pitchers. Five players have been hit by a pitch twice in the same inning in the National League.
Twice has a perfect game been broken up by the 27th batter being hit by pitch. Hooks Wiltse and Max Scherzer hold this rare feat. Both finished with no-hitters after the hit by pitch. Scherzer's team was leading 6-0 when he pitched his no-hitter, but Wiltse's team was scoreless through 9; he pitched a 10-inning 1-0 no-hitter. The record for most hit batters in a no-hitter is three, held by Chris Heston of the San Francisco Giants for his 2015 effort against the New York Mets.
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Serious injuries may result from being hit by a pitch, even when wearing a batting helmet. On August 18, 1967, Red Sox batter Tony Conigliaro was hit almost directly in the left eye by a fastball thrown by Jack Hamilton of the California Angels. His cheekbone was shattered; he nearly lost the sight of the eye, was unable to play for over a year, and never regained his earlier batting ability. Batting helmets at the time were not required to have an "ear flap"; it was not until 2002 that all Major League batters were required to wear helmets with side-protection. Ron Santo was the first player to wear a helmet with an improvised ear-flap, in 1966. He had it made after he was struck by a pitch from Jack Fisher that briefly knocked him unconscious and put him on the Disabled List for two weeks with a fractured cheekbone. On September 28, 1995, Kirby Puckett, of the Minnesota Twins, was struck in the cheek by a Dennis Martínez fastball, breaking his jaw and loosening two teeth. It would be his last regular-season game; during spring training the following year he developed glaucoma, which ended his career. Most recently, Mike Piazza, then of the New York Mets, was hit in the head by a pitch from Julián Tavárez of the St. Louis Cardinals on September 10, 2005. His helmet shattered, and he suffered a concussion. Other relatively minor injuries that are possible include broken fingers or hands, broken feet, broken ribs, injuries to the knee, or groin injuries.
Since inside pitching is a legitimate tactic in baseball, courts have recognized that being hit by a pitch is an inherent risk of the game, so that players cannot sue for any resulting injuries. On April 6, 2006, in a case arising from a game involving community college baseball teams, the Supreme Court of California ruled that baseball players in California assume the risk of being hit by baseballs even if the balls were intentionally thrown so as to cause injury. In the court's words: "For better or worse, being intentionally thrown at is a fundamental part and inherent risk of the sport of baseball. It is not the function of tort law to police such conduct."