AP upset archive
Biggest College Football Upsets of 1955
The season's 25 strongest AP-defined upsets, led by the quality of the ranked team defeated and the game-time ranking gap.
25
Upsets ranked
14
Unranked winners
0
Market-confirmed
Top 25 AP upsets
- Historic upsetWeek 8Home
Unranked Illinois 25, No. 3 Michigan 6
AP evidence · primary
Opponent strength 46/50 · Rank gap 46/50
Market evidence · supporting
No betting line · Pregame win chance —
92
AP score
- Historic upsetWeek 6Road
Unranked Pittsburgh 26, No. 5 Duke 7
AP evidence · primary
Opponent strength 42/50 · Rank gap 42/50
Market evidence · supporting
No betting line · Pregame win chance —
84
AP score
- Historic upsetWeek 11Home
Unranked USC 42, No. 5 Notre Dame 20
AP evidence · primary
Opponent strength 42/50 · Rank gap 42/50
Market evidence · supporting
No betting line · Pregame win chance —
84
AP score
- Major upsetWeek 2Home
Unranked Kentucky 21, No. 8 Ole Miss 14
AP evidence · primary
Opponent strength 36/50 · Rank gap 36/50
Market evidence · supporting
No betting line · Pregame win chance —
72
AP score
- Major upsetWeek 3Home
Unranked Stanford 6, No. 8 Ohio State 0
AP evidence · primary
Opponent strength 36/50 · Rank gap 36/50
Market evidence · supporting
No betting line · Pregame win chance —
72
AP score
- Major upsetWeek 7Home
Unranked Tulane 27, No. 8 Auburn 13
AP evidence · primary
Opponent strength 36/50 · Rank gap 36/50
Market evidence · supporting
No betting line · Pregame win chance —
72
AP score
- Major upsetWeek 11Road
Unranked Texas 21, No. 8 Texas A&M 6
AP evidence · primary
Opponent strength 36/50 · Rank gap 36/50
Market evidence · supporting
No betting line · Pregame win chance —
72
AP score
- Major upsetWeek 5Road
No. 17 Auburn 14, No. 5 Georgia Tech 12
AP evidence · primary
Opponent strength 42/50 · Rank gap 24/50
Market evidence · supporting
No betting line · Pregame win chance —
66
AP score
- Major upsetWeek 7Home
Unranked Minnesota 25, No. 10 USC 19
AP evidence · primary
Opponent strength 32/50 · Rank gap 32/50
Market evidence · supporting
No betting line · Pregame win chance —
64
AP score
- Major upsetWeek 5Home
No. 13 Michigan State 21, No. 4 Notre Dame 7
AP evidence · primary
Opponent strength 44/50 · Rank gap 18/50
Market evidence · supporting
No betting line · Pregame win chance —
62
AP score
- Major upsetWeek 9Home
No. 17 Pittsburgh 26, No. 6 West Virginia 7
AP evidence · primary
Opponent strength 40/50 · Rank gap 22/50
Market evidence · supporting
No betting line · Pregame win chance —
62
AP score
- Major upsetWeek 5Road
No. 19 Texas A&M 19, No. 7 TCU 16
AP evidence · primary
Opponent strength 38/50 · Rank gap 24/50
Market evidence · supporting
No betting line · Pregame win chance —
62
AP score
- Major upsetWeek 5Home
No. 16 USC 33, No. 6 Wisconsin 21
AP evidence · primary
Opponent strength 40/50 · Rank gap 20/50
Market evidence · supporting
No betting line · Pregame win chance —
60
AP score
- Major upsetWeek 11Home
Unranked Army 14, No. 11 Navy 6
AP evidence · primary
Opponent strength 30/50 · Rank gap 30/50
Market evidence · supporting
No betting line · Pregame win chance —
60
AP score
- Major upsetWeek 2Home
No. 5 Maryland 7, No. 1 UCLA 0
AP evidence · primary
Opponent strength 50/50 · Rank gap 8/50
Market evidence · supporting
No betting line · Pregame win chance —
58
AP score
- Major upsetWeek 2Road
Unranked TCU 32, No. 12 Texas Tech 0
AP evidence · primary
Opponent strength 28/50 · Rank gap 28/50
Market evidence · supporting
No betting line · Pregame win chance —
56
AP score
- Major upsetWeek 5Road
Unranked Baylor 13, No. 12 Washington 7
AP evidence · primary
Opponent strength 28/50 · Rank gap 28/50
Market evidence · supporting
No betting line · Pregame win chance —
56
AP score
- Major upsetPostseasonNeutral
Unranked Wyoming 21, No. 12 Texas Tech 14
AP evidence · primary
Opponent strength 28/50 · Rank gap 28/50
Market evidence · supporting
No betting line · Pregame win chance —
56
AP score
- Major upsetWeek 7Home
No. 9 Notre Dame 21, No. 4 Navy 7
AP evidence · primary
Opponent strength 44/50 · Rank gap 10/50
Market evidence · supporting
No betting line · Pregame win chance —
54
AP score
- Major upsetPostseasonNeutral
No. 15 Ole Miss 14, No. 7 TCU 13
AP evidence · primary
Opponent strength 38/50 · Rank gap 16/50
Market evidence · supporting
No betting line · Pregame win chance —
54
AP score
- Major upsetWeek 7Road
Unranked Syracuse 49, No. 13 Holy Cross 9
AP evidence · primary
Opponent strength 26/50 · Rank gap 26/50
Market evidence · supporting
No betting line · Pregame win chance —
52
AP score
- Major upsetWeek 10Road
Unranked Syracuse 20, No. 13 West Virginia 13
AP evidence · primary
Opponent strength 26/50 · Rank gap 26/50
Market evidence · supporting
No betting line · Pregame win chance —
52
AP score
- Major upsetPostseasonNeutral
No. 19 Vanderbilt 25, No. 10 Auburn 13
AP evidence · primary
Opponent strength 32/50 · Rank gap 18/50
Market evidence · supporting
No betting line · Pregame win chance —
50
AP score
- Major upsetWeek 4Home
No. 18 Washington 7, No. 10 USC 0
AP evidence · primary
Opponent strength 32/50 · Rank gap 16/50
Market evidence · supporting
No betting line · Pregame win chance —
48
AP score
- Major upsetWeek 10Road
No. 9 Ohio State 17, No. 6 Michigan 0
AP evidence · primary
Opponent strength 40/50 · Rank gap 6/50
Market evidence · supporting
No betting line · Pregame win chance —
46
AP score
How the ranking works
An upset qualifies only when the winner was unranked or ranked below an AP Top 25 opponent at kickoff. Regular-season games use that game's AP poll week; postseason games use the last regular-season AP poll before bowl and playoff results. The 100-point score splits evenly between defeated-opponent strength and ranking gap. Betting lines and pregame win probability are shown separately as supporting evidence and never change the AP score, so missing market data cannot lower a game.