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|Date of birth:||January 16, 1894|
|Place of birth:||Blue Springs, Nebraska|
|Date of death:||April 4, 1967(aged 73)|
|Place of death:||Lincoln, Nebraska|
|Height:||6 ft 2 in (1.88 m)|
|Weight:||196 lb (89 kg)|
|Career highlights and awards|
|Career NFL statistics|
|Coaching stats at PFR|
|Years of service||1917–1919|
|Battles/wars||World War I|
Berlin Guy "Champ" Chamberlin (January 16, 1894 – April 4, 1967) was a professional American football player and coach in the National Football League (NFL). He played at Nebraska Wesleyan University and then at the University of Nebraska, where he was a member of Beta Theta Pi fraternity. He graduated from Nebraska in 1916. Originally a halfback, in 1915 he moved to end and was named All-American end. He served in the United States Army from 1917 to 1919. He served as player-coach on four NFL title teams: 1922 and 1923 Canton Bulldogs, 1924 Cleveland Bulldogs, and 1926 Frankford Yellow Jackets.
In 1925, Chamberlin became player-coach of the Frankford Yellow Jackets, who finished only sixth that year, with a record of 13–7. In 1926, the Yellow Jackets went 14–1–1 to win the NFL Championship, Chamberlin's fourth in five seasons of coaching.
The following year, he went to the Chicago Cardinals as a player for one season, then became the team's coach in 1928, after which he retired when the Cardinals managed only one win against six losses. His career NFL coaching record was 58 wins, 16 losses, and 7 ties.
Chamberlin has the best win percentage of any coach in NFL history (minimum 50 wins).
Chamberlin returned to Blue Springs in 1932, where he became a farmer, state livestock inspector, and businessman. A well-known authority on football, he became a public speaker and radio broadcaster.