Julius Edward "Chuck" Meriwether was a Major League Baseball (MLB) umpire. After working in the American League (AL) from 1988 to 1999, he umpired in both leagues from 2000 to 2009. Meriwether originally wore number 32, but in 2004 switched to number 14.
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.
Edward George Barrett is an American retired 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.
Paul Lewis Emmel is an American Major League Baseball (MLB) umpire. He worked in the National League in 1999, and has worked throughout both major leagues since 2000. Emmel was named a crew chief in 2017 and wears uniform number 50.
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.
Mark Patrick Wegner is an American Major League Baseball umpire. He worked in the National League from 1998 to 1999, and throughout both major leagues since 2000. He was promoted to Crew Chief for the 2018 MLB season when Dale Scott retired after the 2017 MLB season.
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, two League Championship Series, and two World Series. He wears uniform number 51.
William Scott Miller is an American Major League Baseball umpire who began his career in the American League in 1997. Miller wears number 26. He has been a crew chief since the 2014 season.
William Anthony Welke is an American former Major League Baseball umpire. He joined the major league staff in 1999 and worked the World Series in 2015. Welke was promoted to crew chief for the 2022 season, and retired following that season.
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.
Eric Richard Cooper was an American professional baseball umpire, whose Major League Baseball (MLB) career spanned 1999 until his death in October 2019. He wore umpire uniform number 56. As a Major League umpire, Cooper officiated in ten Division Series, four League Championship Series, three Wild Card Games, one All-Star Game, and one World Series.
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.
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.
Robert Lance Barksdale is an American umpire in Major League Baseball (MLB). He began umpiring in the major leagues in 2000 and joined the full-time major league staff in 2006. Barksdale was promoted to crew chief in 2023.
Christopher Gene Guccione is an American umpire in Major League Baseball. He wears number 68.
Brian Michael Knight is an American professional baseball umpire. He has worked as a full-time Major League Baseball (MLB) umpire since 2011. He wears uniform number 91.
Mark Christopher Carlson 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.
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.
Hal Harrison Gibson III, known as Tripp Gibson, is an American Major League Baseball umpire who wears uniform number 73. Gibson's first Major League game was July 8, 2013, at Chase Field in Phoenix, Arizona. He was promoted to a full-time position in January 2015. Prior to his hiring, he worked as a substitute teacher during the offseason.
UMPS CARE is a 501(c)(3) nonprofit organization formed in 2006 by Major League Baseball (MLB) umpires to provide comfort, encouragement, and support to seriously ill children in hospitals and their families. Umpire crews visit hospitals and distribute gifts to children during the baseball season as well as the off-season, The charity's motto is "Helping People is an Easy Call". As of 2017, the umpires have visited 131 hospitals for UMPS CARE events. The effort originated with umpires Marvin Hudson and Mike DiMuro, who began the "Blue For Kids" hospital visitation program in 2004.
