In baseball, the umpire is the person charged with officiating the game, including beginning and ending the game, enforcing the rules of the game and the grounds, making judgment calls on plays, and handling disciplinary actions. The term is often shortened to the colloquial form ump. They are also sometimes nicknamed blue due to the traditional color of the uniform worn by umpires. Although games were often officiated by a sole umpire in the formative years of the sport, since the turn of the 20th century, officiating has been commonly divided among several umpires, who form the umpiring crew. The position is analogous to that of a referee in many other sports.
Douglas Leon Eddings is an American professional umpire in Major League Baseball.
Joseph Henry West, nicknamed "Cowboy Joe" or "Country Joe", is an American former baseball umpire. He worked in Major League Baseball (MLB) from 1976 to 2021, umpiring an MLB-record 43 seasons and 5,460 games.
John Patrick McSherry was an American umpire in Major League Baseball who worked in the National League from 1971 until his death. McSherry wore uniform number 9 when he entered the National League, then wore number 10 from 1979 through the rest of his career. A respected arbiter, he was one of several umpires who were noticeably obese. McSherry was officially listed at 6 feet 2 inches (1.88 m) and 328 pounds (149 kg). On April 1, 1996, the opening day of the 1996 Major League Baseball season, McSherry suffered a fatal heart attack while calling a game in Cincinnati.
Timothy Reid McClelland is an American former umpire in Major League Baseball who worked in the American League from 1983 to 1999 and throughout both leagues from 2000 through the 2013 season. He called many important games, from post-season games to the George Brett "Pine Tar" game in 1983. He was the plate umpire for the Sammy Sosa corked bat game on June 3, 2003, when the Chicago Cubs hosted the Tampa Bay Devil Rays at Wrigley Field. He wore uniform number 36 after his promotion to the AL, and kept the number when Major League Baseball merged the American and National League umpiring staffs in 2000.
Edward Michael Montague is an American former umpire in Major League Baseball. He worked in the National League in 1974 and from 1976 to 1999, and officiated throughout both leagues between 2000 and 2009. The most senior active umpire in the major leagues at the time of his retirement, he wore uniform number 11 throughout his career. His 4,369 total games ranked eighth in major league history when he retired, and he is one of only three umpires to serve as crew chief for the World Series four times.
Edward George Barrett is an American former Major League Baseball umpire. He joined the American League's staff in 1994, and worked throughout both major leagues from 2000 until his retirement in 2022. Promoted to crew chief in 2013, Barrett worked in 33 play-off series, including five World Series. He retired following the 2022 season.
Jeffrey William Kellogg is a retired Major League Baseball umpire who worked in the National League from 1991 to 1999 and throughout both major leagues from 2000 to 2019. He wore uniform number 8, formerly worn in the NL by Hall of Fame umpire Doug Harvey from 1962 to 1992.
Fieldin Henry Culbreth III is an American former umpire in Major League Baseball (MLB). He worked in the American League from 1993 to 1999 and in both major leagues from 2000 until his retirement in 2021. Culbreth was promoted to crew chief prior to the 2013 season. Culbreth wore number 42 while he was an American League umpire, then changed to 25 in 2000 after the MLB umpires were unified into one crew.
Marvin Lee Hudson is an American Major League Baseball (MLB) umpire who began his career in the National League in 1998. He has officiated in the 2004 All-Star Game, eight Division Series, four League Championship Series, and two World Series. He wears uniform number 51.
Kerwin Joseph Danley is an American former umpire in Major League Baseball who worked in the National League (NL) from 1992 to 1999 and throughout both leagues from 2000 to 2021. He wore uniform number 44. He was promoted to crew chief for the 2020 season, becoming the first full time African-American crew chief. Danley has umpired in the 2008 and 2018 World Series and the 2007 and 2016 Major League Baseball All-Star Games. He is married to Marisa Danley.
Thomas Francis Hallion is a retired Major League Baseball umpire who worked in the National League (NL) from 1985 to 1999 and in both major leagues from 2005 until 2022. He was promoted to crew chief in 2010. Hallion has worn number 20 during his MLB career. He resigned from the NL in 1999 as part of a failed mass bargaining strategy, but he was rehired by MLB before the 2005 season.
Paul Edward Nauert is an American retired Major League Baseball umpire. He worked in the National League from 1995 to 1999 and in Major League Baseball from 2002 until his retirement in 2022. Nauert worked the World Series in 2017.
James Norris Reynolds IV is a former American Major League Baseball umpire. He joined the major league staff in 1999 and was promoted to crew chief for the 2020 season. Reynolds wore uniform number 77. He retired following the 2022 season.
Major League Baseball (MLB) uses instant replay review to allow league officials to review certain types of plays in order to determine the accuracy of the initial call of the umpires on the field. Reviews may be initiated either by a team's manager with limitations or by the umpires themselves. All instant replay reviews are examined by umpires at the Replay Command Center in New York City, who have the final decision as to whether to uphold or overturn the initial call.
Gerald William Meals is an American former Major League Baseball umpire. After serving as an NL reserve umpire from 1992 to 1997, he became a full-time umpire in 1998. Meals was promoted to crew chief in 2015, and worked the World Series in 2014 and 2020. He retired following the 2022 season.
Samuel Woodford Holbrook is an American retired Major League Baseball umpire. He made his MLB debut in 1996 and was promoted to crew chief in 2017. Holbrook worked the World Series in 2010, 2016, and 2019. He retired following the 2022 season.
Mark Christopher Carlson (born July 11, 1969) is an American umpire in Major League Baseball. He wore number 48 until the 2012 season, when his number changed to 6. He was promoted to crew chief for the 2021 season.
John Richard Shulock is a former professional baseball umpire who worked in the American League from 1979 to 1999 and throughout Major League Baseball between 2000 and 2002. Shulock wore number 29 when the AL adopted them for its umpires in 1980, and retained the number when the NL and AL umpire staffs merged in 2000. Shulock umpired 3,050 major league games in his 24-year career. He umpired in two World Series, two All-Star Games, four American League Championship Series, and two American League Division Series.
Alan Dwayne Porter Jr. is an American Major League Baseball umpire. He umpired his first Major League game on April 5, 2010. He wears uniform number 64.
