Berlin Guy "Champ" Chamberlin, sometimes misspelled Guy Chamberlain, was an American professional football player and coach. He was inducted into the College Football Hall of Fame in 1962 and the Pro Football Hall of Fame in 1965. He was also named in 1969 to the NFL 1920s All-Decade Team.

The Canton Bulldogs were a professional American football team, based in Canton, Ohio. They played in the Ohio League from 1903 to 1906 and 1911 to 1919, and the American Professional Football Association, from 1920 to 1923, and again from 1925 to 1926. The Bulldogs won the 1916, 1917, and 1919 Ohio League championships. They were the NFL champions in 1922 and 1923. In 1921–1923, the Bulldogs played 25 straight games without a defeat. This remains an NFL record.