"It was not until the 1975 season that the Big Ten allowed teams to play in bowl games other than the Rose Bowl. Michigan, which had been shut out of the postseason the previous three years, was the first beneficiary of the new rule when it played in the Orange Bowl vs. Oklahoma. Due to the pre-1975 rules, Big Ten teams such as Michigan and Ohio State have lower numbers of all-time bowl appearances than powerhouse teams from the
Big 12 Conference (previously Big Eight and Southwest Conferences) and
Southeastern Conference, which always placed multiple teams in bowl games every year."