-
1
- Jon Jones
- "Bones"
- 27-1-0, 1 NC
-
2
- Sergei Pavlovich
- 18-2-0
-
3
- Ciryl Gane
- "Bon Gamin"
- 12-2-0
-
4
- Stipe Miocic
- 20-4-0
-
5
- Curtis Blaydes
- "Razor"
- 18-4-0, 1 NC
-
6
- Tom Aspinall
- 14-3-0
-
7
- Tai Tuivasa
- "Bam Bam"
- 15-7-0
-
8
- Alexander Volkov
- "Drago"
- 37-10-0
-
9
- Serghei Spivac
- "Polar Bear"
- 16-4-0
-
10
- Jailton Almeida
- "Malhadinho"
- 20-3-0
-
11
- Marcin Tybura
- "Tybur" | 25-8-0
-
12
- Derrick Lewis
- "The Black Beast" | 27-12-0, 1 NC
-
13
- Jairzinho Rozenstruik
- "Bigi Boy" | 14-5-0
-
14
- Alexandr Romanov
- "King Kong" | 17-2-0
-
15
- Chris Daukaus
- 12-7-0
-
Debuts at UFC 252
-
16
- Blagoy Ivanov
- "Baga" | 19-7-0, 1 NC
-
17
- Marcos Rogério de Lima
- "Pezão" | 22-9-1
-
18
- Shamil Abdurakhimov
- "Abrek" | 20-8-0
-
19
- Augusto Sakai
- 16-5-1
-
20
- Martin Buday
- "Badys" | 13-2-0
-
21
- Rodrigo Nascimento
- "Zé Colmeia" | 11-1-0, 1 NC
-
22
- Don'Tale Mayes
- "Lord Kong" | 11-6-0, 1 NC
-
23
- Andrei Arlovski
- "The Pitbull" | 34-23-0, 2 NC
-
24
- Waldo Cortes-Acosta
- "Salsa Boy" | 11-1-0
-
25
- Mohammed Usman
- "The Motor" | 10-3-0
-
26
- Chris Barnett
- "Beastboy" | 23-8-0
-
27
- Justin Tafa
- "Bad Man" | 7-4-0, 1 NC
-
28
- Parker Porter
- 14-9-0
-
29
- Karl Williams
- 10-1-0
-
30
- Jake Collier
- "The Prototype" | 13-10-0
-
31
- Jamal Pogues
- "The Stormtrooper" | 11-4-0
-
32
- Josh Parisian
- 15-8-0
-
33
- Junior Tafa
- "The Juggernaut" | 5-2-0
-
34
- Łukasz Brzeski
- "The Bull" | 9-4-1, 1 NC
-
35
- Jarjis Danho
- "Man Mountain" | 6-1-1, 1 NC
-
Inactive
-
36
- Walt Harris
- "The Big Ticket" | 13-10-0, 1 NC
-
Inactive