However, Illinois was retroactively named as the national champion by the Boand System, College Football Researchers Association, Helms Athletic Foundation, and Parke H. Davis, and as a co-national champion by the Berryman QPRS system, National Championship Foundation, and Jeff Sagarin (using the ELO-Chess methodology).

[2] Sophomore left halfback Red Grange put up 196 yards on 21 carries in the season opener, launching his legendary collegiate career with a flourish.

[3] For the year Grange "The Galloping Ghost" tallied 723 rushing yards and scored 12 touchdowns in seven games.

Grange and Guard Jim McMillen were consensus first-team picks on the 1923 All-America college football team.

[5] This was the first season for the Fighting Illini at Memorial Stadium, where the team plays their home games to this day.