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
Uriah Hall def. Anderson Silva
7
Chris Weidman def. Anderson Silva
8
Chris Weidman def. Anderson Silva
9
Jared Cannonier def. Anderson Silva
10
Michael Chandler def. Tony Ferguson
11
Dennis Bermudez def. Max Holloway
12
Israel Adesanya def. Anderson Silva
13
😮
Stefan Struve def. Stipe Miocic
14
Jeremy Horn def. Chuck Liddell
15
Michael Johnson def. Tony Ferguson
16
Dominick Cruz def. Demetrious Johnson
17
Dennis Hallman def. Matt Hughes
18
Frankie Saenz def. Merab Dvalishvili
19
Sam Alvey def. Rashad Evans
20
😮
Junior Dos Santos def. Stipe Miocic
21
Keith Jardine def. Chuck Liddell
22
BJ Penn def. Matt Hughes
23
Marlon Moraes def. Aljamain Sterling
24
BJ Penn def. Matt Hughes
25
😮
Joseph Benavidez def. Henry Cejudo
26
😮
Josh Koscheck def. Matt Hughes
27
Brad Tavares def. Chris Weidman
28
Mauricio Rua def. Chuck Liddell
29
😮
Antonio Rodrigo Nogueira def. Randy Couture
30
Marlon Moraes def. Jose Aldo
31
Dan Henderson def. Michael Bisping
32
😮
Thiago Alves def. Matt Hughes
33
Julianna Pena def. Amanda Nunes
34
Wanderlei Silva def. Michael Bisping
35
😮
Chael Sonnen def. Michael Bisping
36
Eryk Anders def. Chris Weidman
37
Dominick Reyes def. Chris Weidman
38
Clay Guida def. BJ Penn
39
King Green def. Tony Ferguson
40
Court McGee def. Robert Whittaker
41
😮
Pete Williams def. Mark Coleman
42
😮
Shamil Abdurakhimov def. Andrei Arlovski
43
Donald Cerrone def. Charles Oliveira
44
Claudio Silva def. Leon Edwards
45
Brian Kelleher def. Renan Barao
46
😮
Don'Tale Mayes def. Andrei Arlovski
47
Jacare Souza def. Chris Weidman
48
Paul Craig def. Magomed Ankalaev
49
Andre Ewell def. Renan Barao
50
Jeremy Stephens def. Renan Barao
😮 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.