In very rare cases, a fielder attempting to catch a ball in flight may misplay it and knock it over the outfield fence, resulting in a home run.
[5] A home run is most often scored when the ball is hit over the outfield wall between the foul poles (in fair territory) before it touches the ground (in flight), and without being caught or deflected back onto the field by a fielder.
The ball is dead, even if it rebounds back onto the field (e.g., from striking a foul pole), and the batter and any preceding runners cannot be put out at any time while running the bases.
On July 25, 1956, Roberto Clemente became the only MLB player to have ever scored a walk-off inside-the-park grand slam in a 9–8 Pittsburgh Pirates win over the Chicago Cubs, at Forbes Field.
On April 23, 1999, Fernando Tatís Sr. made history by hitting two grand slams in one inning, both against Chan Ho Park of the Los Angeles Dodgers.
On October 25th, 2024, Freddie Freeman made history by hitting a walk-off grand slam in Game 1 of the World Series, leading the Los Angeles Dodgers to win against the New York Yankees 3-6 in the bottom of the 10th inning.
The term is attributed to Hall of Fame relief pitcher Dennis Eckersley,[9] so named because after the run is scored, the losing team has to "walk off" the field.
[12] As of August 21 2024, George Springer holds the career record among active players, with 60 leadoff home runs, which also ranks him second all-time.
On June 9, 2019, the Washington Nationals hit four in a row against the San Diego Padres in Petco Park as Howie Kendrick, Trea Turner, Adam Eaton and Anthony Rendon homered off pitcher Craig Stammen.
In this game, Jim Thome, Paul Konerko, Alexei Ramírez, and Juan Uribe hit back-to-back-to-back-to-back home runs in that order.
On April 22, 2007, the Boston Red Sox were trailing the New York Yankees 3–0 when Manny Ramirez, J. D. Drew, Mike Lowell and Jason Varitek hit consecutive home runs to put them up 4–3.
On September 18, 2006, trailing 9–5 to the San Diego Padres in the ninth inning, Jeff Kent, J. D. Drew, Russell Martin, and Marlon Anderson of the Los Angeles Dodgers hit back-to-back-to-back-to-back home runs to tie the game.
If a pitcher gives up a home run, he might have his concentration broken and might alter his normal approach in an attempt to "make up for it" by striking out the next batter with some fastballs.
A notable back-to-back home run of that type in World Series play involved "Babe Ruth's called shot" in 1932, which was accompanied by various Ruthian theatrics, yet the pitcher, Charlie Root, was allowed to stay in the game.
On May 2, 2002, Bret Boone and Mike Cameron of the Seattle Mariners hit back-to-back home runs off starter Jon Rauch in the first inning of a game against the Chicago White Sox.
[clarification needed] On July 23, 2017, Whit Merrifield, Jorge Bonifacio, and Eric Hosmer of the Kansas City Royals hit back-to-back-to-back home runs in the fourth inning against the Chicago White Sox.
On June 20, 2018, George Springer, Alex Bregman, and Jose Altuve of the Houston Astros hit back-to-back-to-back home runs in the sixth inning against the Tampa Bay Rays.
Then in the bottom of the ninth, with two outs and the Cardinals leading 4–3, Christian Yelich homered to tie the game; and Ryan Braun hit the next pitch for a walk-off home run.
On May 5, 2019, Eugenio Suarez, Jesse Winker and Derek Dietrich of the Cincinnati Reds, hit back-to-back-to-back home runs on three straight pitches against Jeff Samardzija of the San Francisco Giants in the bottom of the first inning.
Batters such as Babe Ruth and Rogers Hornsby took full advantage of rules changes that were instituted during the 1920s, particularly the prohibition of the spitball, and the requirement that balls be replaced when worn or dirty.
[6]: 23 Additionally, MLB rule 5.05(a)(5) still stipulates that a ball hit over a fence in fair territory that is less than 250 feet (76 m) from home plate "shall entitle the batter to advance to second base only",[6]: 22 as some early ballparks had short dimensions.
The all-time, verified professional baseball record for career home runs for one player, excluding the U.S. Negro leagues during the era of segregation, is held by Sadaharu Oh.
[32] Only eight other major league players have hit as many as 600: Hank Aaron (755), Babe Ruth (714), Albert Pujols (703),[32] Alex Rodriguez (696),[32] Willie Mays (660), Ken Griffey Jr. (630), Jim Thome (612), and Sammy Sosa (609).
In 1987, Joey Meyer of the minor league Denver Zephyrs hit the longest verifiable home run in professional baseball history.
[34][35] On May 6, 1964, Chicago White Sox outfielder Dave Nicholson hit a home run officially measured at 573 feet that either bounced atop the left-field roof of Comiskey Park or entirely cleared it.
Similarly, the point where Aaron's 715th home run landed, upon breaking Ruth's career record in 1974, is marked in the Turner Field parking lot.
A red-painted seat in Fenway Park marks the landing place of the 502-ft home run Ted Williams hit in 1946, the longest measured home run in Fenway's history; a red stadium seat mounted on the wall of the Mall of America in Bloomington, Minnesota, marks the landing spot of Harmon Killebrew's record 520-foot shot in old Metropolitan Stadium.
Jose Altuve (23), Bernie Williams (22), Derek Jeter (20), and Kyle Schwarber (20) are the only other players to hit twenty postseason home runs.
Rounding out the top ten as of the end of the 2021 season are Albert Pujols (19), George Springer (19), Carlos Correa (18), Reggie Jackson (18), Mickey Mantle (18, all in the World Series), and Nelson Cruz (18).
[39][40] In November 2007, the general managers of Major League Baseball voted in favor of implementing instant replay reviews on boundary home run calls.