Illinois State vs. Southern Illinois

Every meeting on file, as played. Ranks are the AP poll’s going in.

1. Illinois State’s biggest win2018: Illinois State 51, Southern Illinois 3by 48 points
2. Southern Illinois’s biggest win1980: Southern Illinois 42, Illinois State 0by 42 points
3. Upset2012: Southern Illinois 17, Illinois State 0Southern Illinois had a 20% chance, by our ratings before kickoff
4. Upset2025: Southern Illinois 37, Illinois State 7Southern Illinois had a 25% chance, by our ratings before kickoff
5. Upset2005: Illinois State 61, Southern Illinois 35Illinois State had a 29% chance, by our ratings before kickoff

Head-coach pairings with three or more meetings on file, the series read from Illinois State’s side (Cowdrey 0–⁠4 against Dempsey). A season split between coaches goes to the one credited with the game.

Our Elo rating at the end of each season, a measure of how strong a team was, not a forecast; 1500 is an average FBS team.

Every game is listed as played on the field.

• Illinois State vs. Eastern Illinois35 meetings, Illinois State 23–⁠12
• Illinois State vs. Western Illinois35 meetings, Illinois State 21–⁠14
• Illinois State vs. Indiana State33 meetings, Illinois State 22–⁠11
• Illinois State vs. Northern Iowa24 meetings, Illinois State 10–⁠14
• Southern Illinois vs. Indiana State36 meetings, Southern Illinois 22–⁠14
• Southern Illinois vs. Missouri State26 meetings, Southern Illinois 17–⁠9
• Southern Illinois vs. Southeast Missouri State24 meetings, Southern Illinois 18–⁠6
• Southern Illinois vs. Youngstown State24 meetings, Southern Illinois 11–⁠13