Biggest Upsets in UFC History
The most shocking results where underdogs defied the odds
2026 Stats
50
Upsets
🥇
Matt Hamill def. Jon Jones
🥈
Matt Serra def. Georges St-Pierre
🥉
Matt Hughes def. Georges St-Pierre
4
Adriano Martins def. Islam Makhachev
5
Cat Zingano def. Amanda Nunes
6
Dennis Bermudez def. Max Holloway
7
Uriah Hall def. Anderson Silva
8
Chris Weidman def. Anderson Silva
9
Chris Weidman def. Anderson Silva
10
Michael Johnson def. Tony Ferguson
11
Michael Chandler def. Tony Ferguson
12
Israel Adesanya def. Anderson Silva
13
Jared Cannonier def. Anderson Silva
14
Sam Alvey def. Rashad Evans
15
BJ Penn def. Matt Hughes
16
BJ Penn def. Matt Hughes
17
Dominick Cruz def. Demetrious Johnson
18
Jeremy Horn def. Chuck Liddell
19
😮
Joseph Benavidez def. Henry Cejudo
20
😮
Stefan Struve def. Stipe Miocic
21
Brad Tavares def. Chris Weidman
22
😮
Junior Dos Santos def. Stipe Miocic
23
Dennis Hallman def. Matt Hughes
24
Dan Henderson def. Michael Bisping
25
Keith Jardine def. Chuck Liddell
26
Marlon Moraes def. Aljamain Sterling
27
😮
Antonio Rodrigo Nogueira def. Randy Couture
28
Frankie Saenz def. Merab Dvalishvili
29
😮
Chael Sonnen def. Michael Bisping
30
Frankie Edgar def. Charles Oliveira
31
Wanderlei Silva def. Michael Bisping
32
Donald Cerrone def. Charles Oliveira
33
😮
Josh Koscheck def. Matt Hughes
34
Eryk Anders def. Chris Weidman
35
😮
Pete Williams def. Mark Coleman
36
Jeremy Stephens def. Rafael Dos Anjos
37
Mauricio Rua def. Chuck Liddell
38
Tim Kennedy def. Michael Bisping
39
😮
Thiago Alves def. Matt Hughes
40
Julianna Pena def. Amanda Nunes
41
Claudio Silva def. Leon Edwards
42
Jeremy Stephens def. Renan Barao
43
Clay Guida def. BJ Penn
44
Court McGee def. Robert Whittaker
45
😮
Shamil Abdurakhimov def. Andrei Arlovski
46
Marlon Moraes def. Jose Aldo
47
Andrei Arlovski def. Fabricio Werdum
48
King Green def. Tony Ferguson
49
Alexander Gustafsson def. Glover Teixeira
50
Patrick Cummins def. Jan Blachowicz
😮 How We Measure Upsets
Upsets are ranked by ELO rating difference between the loser's peak rating and the winner's current rating. A larger gap indicates a more shocking result where a lower-ranked fighter defeated a much higher-ranked opponent.
❓ Frequently Asked Questions
What is the biggest upset in UFC history?
The biggest upsets are determined by the ELO rating difference between the winner and loser. A larger gap means a more shocking result where the underdog prevailed.
How are upsets measured?
We use our ELO rating system to quantify upsets. When a fighter with a much lower ELO defeats a fighter with a much higher ELO, the difference in ratings determines how significant the upset was.