 Then he coached the Texas Tech Red Raiders from 1970 to 1974, where he amassed a 37–20–2 record.From 1975 to 1981, he was the head football coach of the South Carolina Gamecocks where he coached Heisman Trophy running back George Rogers and compiled a 45–36–1 record.Carlen 45 wins are third most in the program's history after Steve Spurrier's 86 and Rex Enright's 64.