During his junior season at Nebraska in 1971, Blahak was involved in a controversial play on national television. In the "Game of the Century" against #2 Oklahoma on Thanksgiving, he was accused of clipping Sooner punter Joe Wylie during a punt return that Johnny Rodgers returned 72 yards for a touchdown, but was not penalized. He forced a fumble and recovered another in the game. He also ended Alabama's best scoring chance in the 1972 Orange Bowl by intercepting a Terry Davis pass in the end zone; Nebraska crushed the #2 Crimson Tide 38-6 for the consensus national title. In his senior season, the 1972 team finished fourth and won a third consecutive Orange Bowl, defeating Notre Dame 40-6.