4. Tommie Harris, DT, 2001:
In Harris' first college football game, he made a tackle for loss against North Carolina. It was the first of 17 he recorded as a freshman, when Harris was a first-team All-Big 12 selection and a freshman All-American. He was a consensus All-American as a sophomore and junior, winning the Lombardi Award as the nation's top defensive linemen in 2003, his junior year and final season in Norman.
5. Joe Washington, RB, 1972: In the middle of the first season where freshmen were eligible, Washington became OU's left halfback in the wishbone, opposite Greg Pruitt. He rushed for 630 yards and seven touchdowns, including one in a 17-14 win over Nebraska. The College Football Hall of Famer and two-time All-American went on to one of the all-time greatest OU careers, rushing for 4,071 yards and 39 TDs.