Manchester United Manager Sir Alex Ferguson announced he will retire at the end of the English Premier League season. Ferguson has managed the team for 26 years, making him the longest-serving manager in Premier League history.
Longest-serving coaches in sports —
Manchester United Manager Sir Alex Ferguson announced he will retire at the end of the English Premier League season. Ferguson has managed the team for 26 years, making him the longest-serving manager in Premier League history.
Alex Livesey/Getty Images
Mike Krzyzewski, also known as Coach K, has coached Duke University's men's basketball team since 1980, putting him in his 33rd season as head coach.
Longest-serving coaches in sports —
Mike Krzyzewski, also known as Coach K, has coached Duke University's men's basketball team since 1980, putting him in his 33rd season as head coach.
Sara D. Davis/Getty Images
Eddie Robinson served as Grambling State University's head football coach for 57 seasons from 1941 to 1997. Robinson -- here listening to the national anthem before his final game -- coached more than 4,000 players.
Longest-serving coaches in sports —
Eddie Robinson served as Grambling State University's head football coach for 57 seasons from 1941 to 1997. Robinson -- here listening to the national anthem before his final game -- coached more than 4,000 players.
William Snyder/Time Life Pictures/Getty Images
Al Arbour coached the New York Islanders for 20 years, with a year-long stint as vice president of player development for the team in 1987.
Longest-serving coaches in sports —
Al Arbour coached the New York Islanders for 20 years, with a year-long stint as vice president of player development for the team in 1987.
George Tiedemann/Sports Illustrated/Getty Images
Andy Landers has coached the University of Georgia Lady Bulldogs basketball team since 1979 and continues to this day.
Longest-serving coaches in sports —
Andy Landers has coached the University of Georgia Lady Bulldogs basketball team since 1979 and continues to this day.
William Mancebo/Getty Images
Head coach emeritus Pat Summitt of the Tennessee Lady Volunteers is the all-time winningest coach in NCAA history of either men's or women's teams. She coached for 38 years before stepping down in 2012 to fight early onset dementia.
Photos: Longest-serving coaches in sports —
Head coach emeritus Pat Summitt of the Tennessee Lady Volunteers is the all-time winningest coach in NCAA history of either men's or women's teams. She coached for 38 years before stepping down in 2012 to fight early onset dementia.
Doug Benc/Getty Images
Gregg Popovich is in his 17th year as coach of the San Antonio Spurs.
Longest-serving coaches in sports —
Gregg Popovich is in his 17th year as coach of the San Antonio Spurs.
Noah Graham/NBAE via Getty Images
Tom Landry coached the Dallas Cowboys from 1960 to 1988 and turned the team into one of the most dominant in the National Football League until the early '80s.
Longest-serving coaches in sports —
Tom Landry coached the Dallas Cowboys from 1960 to 1988 and turned the team into one of the most dominant in the National Football League until the early '80s.
Staff/Getty Images
Connie Mack managed the Philadelphia Athletics, now based in Oakland, California, from 1901 until his retirement at age 88 in 1950.
Longest-serving coaches in sports —
Connie Mack managed the Philadelphia Athletics, now based in Oakland, California, from 1901 until his retirement at age 88 in 1950.
Mark Rucker/Transcendental Graphics/Getty Images