He played halfback for four seasons for the Chicago Bears in the National Football League (NFL).
[5] Harry Clarke set many records while playing for West Virginia University.
While at WVU Clarke rushed for 921 yards, which was a team record at the time, in the 1938 season.
[6] During his rookie season with the Chicago Bears, Clarke scored two touchdowns in the 1940 NFL Championship Game to help defeat the Washington Redskins 73–0.
According to some statistics, Clarke played for both the Dons and the Rockets in the 1948 season: 5 games for each team.