The NCAA was without a playoff for the major college football teams in the University Division, later known as Division I-A, during the 20th century. The NCAA recognizes Division I-A national champions based on the final results of polls including the "wire service", FWAA and NFF. The 1964 AP poll continued to rank only ten teams, compiling the votes of 55 sportswriters, each of whom would give their opinion of the ten best. Under a point system of 10 points for first place, 9 for second, etc., the "overall" ranking was determined.
The 1989 NCAA Division I-A football season ended with Miami winning its third National Championship during the 1980s, cementing its claim as the decade's top team, winning more titles than any other program.
The 1981 NCAA Division I-A football season ended with the Clemson Tigers, unbeaten and untied, claiming the national championship after a victory over Nebraska in the Orange Bowl. This was also the first year of the California Bowl, played in Fresno, California; this game fancied itself as a "junior" version of the Rose Bowl as it pitted the Big West Conference champion vs. the Mid-American Conference champion.
The 1980 NCAA Division I-A football season saw a university from the state of Georgia take its first national title since 1942.
During the 20th century, the NCAA had no playoff for the major college football teams in the University Division, later known as Division I-A. The NCAA did recognize a national champion based upon the final results of "wire service" polls. The "writers' poll" by Associated Press (AP) was the most popular, followed by the "coaches' poll" by United Press International) (UPI). Prior to 1965, both services issued their final polls at the close of the regular season, but before teams competed in bowl games. For the 1965 season, the AP took its final poll after the postseason games, an arrangement made permanent in 1968. The Associated Press presented the "AP Trophy" to the winner.
The 1966 University Division football season was marked by some controversy as the year of "The Tie", a famous 10–10 game between the two top-ranked teams, Michigan State and Notre Dame on November 19. Both teams were crowned national champions by various organizations after the regular season concluded, and neither participated in a bowl game. Alabama finished the regular season undefeated and was third in the AP poll, while Georgia was fourth. Alabama went on to win the Sugar Bowl in dominant fashion. During the 20th century, the NCAA had no playoff for the major college football teams in the University Division, later known as Division I-A.
The 1958 college football season was the 90th season of intercollegiate football in the United States. It concluded with two teams having claim to the major college national championship:
The 1957 college football season was the 89th season of intercollegiate football in the United States. It concluded with two teams having claim to the major college national championship:
The 1935 college football season was the last one before the Associated Press (AP) writers' poll was used in selecting the national champion. There were seven contemporary math system selectors that year who are informally recognized by the NCAA as "nationwide in scope". The Dickinson System, run by University of Illinois Professor Frank Dickinson, selected Southern Methodist University (SMU) as best in the nation. The Houlgate System, created by Carroll Everard "Deke" Houlgate Sr., also selected SMU. The contemporary Boand, Litkenhous and Poling math rating systems all selected Minnesota as the No. 1 team in the nation. The Dunkel System selected Princeton as its top team. The Williamson System, by Paul O. Williamson of New Orleans, ranked Texas Christian University first.
The 1944 college football season was the 76th season of intercollegiate football in the United States. Competition included schools from the Big Ten Conference, the Pacific Coast Conference (PCC), the Southeastern Conference (SEC), the Big Six Conference, the Southern Conference, the Southwestern Conference, and numerous smaller conferences and independent programs.
The 1951 college football season was the 83rd season of intercollegiate football in the United States. It finished with Princeton halfback Dick Kazmaier winning the Heisman Trophy and the Maxwell Award. Five teams have laid claim to the 1951 national championship:
The 1950 college football season was the 82nd season of intercollegiate football in the United States. It concluded with four teams having a claim to the national championship:
The 1949 college football season was the 81st season of intercollegiate football in the United States. It concluded with the top four teams undefeated and untied at the end of the regular season:
The 1947 college football season finished with Notre Dame, Michigan, and Penn State all unbeaten and untied, but the Fighting Irish of Notre Dame were the first place choice for 107 of the 142 voters in the final AP Poll in early December, and repeated as national champions. Michigan was selected for the top spot by six contemporary math systems.
The 1946 college football season was the 78th season of intercollegiate football in the United States. Competition included schools from the Big Ten Conference, the Pacific Coast Conference (PCC), the Southeastern Conference (SEC), the Big Six Conference, the Southern Conference, the Southwestern Conference, and numerous smaller conferences and independent programs. The season saw the return of many programs which had suspended play during World War II, and also the enrollment of many veterans returning from the war.
The 1938 college football season ended with the Horned Frogs of Texas Christian University (TCU) being named the nation's No. 1 team by 55 of the 77 voters in the final Associated Press writers' poll in early December. Tennessee was also chosen by six contemporary math system selectors as a national champion; both teams won every game. Notre Dame was chosen by the Dickinson System and won the Knute Rockne Memorial Trophy.
The 1939 college football season concluded with the Aggies of The Agricultural and Mechanical College of Texas being named as the national champions by the voters in the Associated Press writers' poll. Led by consensus All-American fullback John Kimbrough, the Aggies went undefeated at 11–0 and outscored their opponents by a combined total of 212 to 31, with the defense allowing just 54 first downs and 763 yards all season, or 1.71 yards per play. On New Year's Day, Texas A&M defeated Tulane, 14–13 in the Sugar Bowl.
The 1941 college football regular season was the 73rd season of intercollegiate football in the United States. Competition included schools from the Big Ten Conference, the Pacific Coast Conference (PCC), the Southeastern Conference (SEC), the Big Six Conference, the Southern Conference, the Southwestern Conference, and numerous smaller conferences and independent programs.
The 1943 college football season was the 75th season of intercollegiate football in the United States. Played during World War II, the competition included schools from the Big Ten Conference, the Pacific Coast Conference (PCC), the Southeastern Conference (SEC), the Big Six Conference, the Southwestern Conference, and numerous smaller conferences and independent programs.
The 1945 college football season was the 77th season of intercollegiate football in the United States. Competition included schools from the Big Ten Conference, the Pacific Coast Conference (PCC), the Southeastern Conference (SEC), the Big Six Conference, the Southern Conference, the Southwest Conference, and numerous smaller conferences and independent programs. The season followed the end of World War II in August 1945, though many college players remained in military service.