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 the disciplinary actions. The term is often shortened to the colloquial form ump. They are also sometimes addressed as blue at lower levels due to the common color of the uniform worn by umpires. In professional baseball, the term blue is seldom used by players or managers, who instead call the umpire by name. 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.
Jose Alexander Cora is a Puerto Rican baseball manager and former infielder who is the manager of the Boston Red Sox in Major League Baseball (MLB). He previously played in MLB for 14 seasons with the Red Sox, Los Angeles Dodgers, Cleveland Indians, New York Mets, Texas Rangers, and Washington Nationals. After retiring as a player, Cora served as the bench coach for the Houston Astros when they won their first World Series title in 2017. Cora was named Boston's manager the following season, winning a franchise-best 108 games and leading the team to victory in the 2018 World Series. He is the fifth MLB manager to win the World Series in his first season and the first Puerto Rican manager of a World Series-winning team.
Gary Richard Darling is an American former umpire in Major League Baseball. After beginning his career in the National League from 1986 to 1999, he worked throughout both major leagues from 2002 until his retirement in 2014. He wore uniform number 37.
Ángel Hernández is a Cuban-American umpire in Major League Baseball (MLB). He worked in the National League from 1991 to 1999, and has worked throughout MLB since 2000.
James Alfred Joyce III is an American former professional baseball umpire who worked in the American League (AL) from 1987 to 1999 and throughout Major League Baseball (MLB) from 2000 to 2016. He wore uniform number 6 while in the AL and number 66 for MLB. His loud and enthusiastic strike call drew comparisons to that of retired umpire Bruce Froemming. Though his umpiring was generally praised by players and coaches, Joyce is best known for his incorrect call in Armando Galarraga's near-perfect game in June 2010.
Michael John Winters is an American former umpire in Major League Baseball who has worked in the National League from 1988 to 1999 and throughout both major leagues from 2000 to 2019, wearing number 33. For the 2011 season, Winters was named a crew chief following the retirements of Jerry Crawford, Mike Reilly, and Chuck Meriwether.
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.
Manuel Arturo Machado is an American professional baseball third baseman and shortstop for the San Diego Padres of Major League Baseball (MLB). Very highly recruited from an early age, he was raised in Miami, where he attended Brito High School and was drafted by the Baltimore Orioles with the third overall pick in the 2010 MLB draft. He bats and throws right-handed. He has played for the Dominican Republic national baseball team.
Larry Wayne Vanover is an American professional baseball umpire. Vanover worked in the National League from 1991 to 1999. He did not umpire in 2000 and 2001, and since 2002 has umpired across both major leagues. Vanover has umpired two All Star Games, and in the 2016 World Series. He was promoted to crew chief in 2015. Vanover wore sleeve number 28 during his National League tenure, then changed to 27 after his return to the MLB umpiring staff in 2002.
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.
Robert Paul Drake is an American umpire in Major League Baseball. He was named to the Major League staff in 2010, and wears uniform number 8.
Kelvin de Jesús Herrera Mercado is a Dominican former professional baseball pitcher. He played in Major League Baseball (MLB) for the Kansas City Royals from 2011 to 2018, Washington Nationals in 2018, and Chicago White Sox in 2019 and 2020. Herrera is a two-time MLB All-Star. He is currently the mayor of his hometown, Tenares, Dominican Republic.
Victor Joseph Carapazza is an American Major League Baseball umpire. He wears uniform number 19, and previously wore uniform number 85.
Lance Cole Barrett is an American umpire in Major League Baseball (MLB). He wore number 94 but changed to 16 starting in the 2020 season. Barrett became a minor league umpire in 2003 and was hired to the MLB staff prior to the 2014 season.
Michael William Muchlinski is an American Major League Baseball umpire. He umpired his first Major League game on April 24, 2006, and was officially hired by MLB prior to the 2014 season.
Quinn Wolcott is an American umpire in Major League Baseball. He wears number 81.
Carlos Torres Nuldis is a Venezuelan professional umpire in Major League Baseball (MLB). He made his major league debut in 2015.
Ramón Laureano Jr. is a Dominican professional baseball outfielder for the Cleveland Guardians of Major League Baseball (MLB). He has previously played in MLB for the Oakland Athletics.
Christopher Robert Segal is an American Major League Baseball (MLB) umpire. He wears number 96. He made his MLB umpiring debut in 2014.
Nicolas James Lentz is an American umpire in Major League Baseball. He made his debut on April 20, 2016, in Miami. He wears number 59, which was most recently worn by former umpire Jon Byrne.
