Bob Mastin was a much-decorated player for the Bison football team, and perhaps he made his biggest mark as a defensive player in a game on the road against the University of Arkansas in 1925 when he intercepted three passes.OBU defeated the Razorbacks 6-0.

From Wetumka, his recognitions included second-team guard 1924 All Oklahoma Intercollegiate Conference Team; first-team 1925 All OIC center; 1925 Daily Oklahoman and Tulsa World All Oklahoma Collegiate Team center; second-team 1926 All OIC center; first-team center 1926 Tulsa World All Oklahoma.

He was team captain of the 1925 football team.

Mastin also lettered in track in 1925, 1926, and 1927 and in baseball in 1923.

He was a teacher and coach from 1927-42 and a research chemist from 1942-67.

He died in 1983.