undefeated national championship season in 1968. Alongside legendary classmates like Rex Kern, Jack Tatum, Leo Hayden, Mike Sensibaugh, Jan White, and Bruce Jankowski, Stillwagon was a force in Ohio State's interior defensive line during a stretch in which the Buckeyes lost only two games in three years.
defensive coordinator at that time, Lon McCullough, told the United Press International in 1970 that Stillwagon was the team's best defensive player. Stillwagon commanded double and triple teams on a defense that allowed players like Jack Tatum and Mike Sensibaugh to shine in the defensive backfield.