
William Romero
"Leon"
"Leon"
Date of Birth: | Nov 11, 1982 (Age 42) |
Fighting out of: | Stoney Creek, Ontario, Canada ![]() |
Born In: | Canada ![]() |
Team: | Tiger Muay Thai |
Weight: | 145 lb / 66 kg |
Height: | 176 cm / 5'9" |
Result | Opponent | Weight | # | Method | Event | Date | Location |
---|---|---|---|---|---|---|---|
Loss | Patricio Freire | 145 lb | ![]() | Submission (heel hook), R1 (2:01) | Bellator 15 | 2010-04-22 | ![]() |
2010-04-22 - Bellator 15 -
Uncasville, Connecticut, USA


Result | Opponent | Weight | # | Method | Event | Date | Location |
---|---|---|---|---|---|---|---|
Loss | Patricio Freire | 145 lb | ![]() | Submission (heel hook), R1 (2:01) | Bellator 15 | 2010-04-22 | ![]() |


~
Winner: Patricio Freire via Submission (heel hook) in round 1 (2:01)
User #1 | ![]() |
![]() |
![]() |
Patricio Freire via Submission in round 2 |
User #2 | ![]() |
![]() |
![]() |
Patricio Freire via Submission in round 3 |
User #3 | ![]() |
![]() |
![]() |
William Romero via Submission in round 1 |
User #4 | ![]() |
![]() |
![]() |
Patricio Freire via Decision |
User #5 | ![]() |
![]() |
![]() |
Patricio Freire via KO in round 1 |
User #6 | ![]() |
![]() |
![]() |
Patricio Freire via Submission in round 2 |

Result | Opponent | Weight | # | Method | Event | Date | Location |
---|---|---|---|---|---|---|---|
Win | Jeremy Kennedy | 145 lb | TKO (knees and punches), R3 (4:07) | Bellator Champions Series: Belfast | 2024-03-22 | ![]() |
|
Loss | Chihiro Suzuki | 154 lb | KO (punch), R1 (2:32) | Super Rizin 2 | 2023-07-30 | ![]() |
|
Loss | Sergio Pettis | 135 lb | ![]() |
Decision (unanimous) | Bellator 297: Nemkov vs. Romero | 2023-06-16 | ![]() |
Win | Kleber Koike Erbst | 146 lb | Decision (unanimous) | Bellator MMA vs. Rizin | 2022-12-31 | ![]() |
|
Win | Ádám Borics | 145 lb | ![]() |
Decision (unanimous) | Bellator 286: Pitbull vs. Borics | 2022-10-01 | ![]() |
Win | A.J. McKee | 145 lb | ![]() |
Decision (unanimous) | Bellator 277: McKee vs. Pitbull 2 | 2022-04-15 | ![]() |
Loss | A.J. McKee | 145 lb | ![]() |
Technical Submission (guillotine choke), R1 (1:57) | Bellator 263: Pitbull vs. McKee | 2021-07-31 | ![]() |
Win | Emmanuel Sanchez | 145 lb | ![]() |
Technical Submission (guillotine choke), R1 (3:35) | Bellator 255 | 2021-04-02 | ![]() |
Win | Pedro Carvalho | 145 lb | ![]() |
KO (punch), R1 (2:10) | Bellator 252: Pitbull vs. Carvalho | 2020-11-12 | ![]() |
Win | Juan Archuleta | 145 lb | ![]() |
Decision (unanimous) | Bellator 228: Pitbull vs. Archuleta | 2019-09-28 | ![]() |
Win | Michael Chandler | 155 lb | ![]() |
TKO (punches), R1 (1:01) | Bellator 221: Chandler vs. Pitbull | 2019-05-11 | ![]() |
Win | Emmanuel Sanchez | 145 lb | ![]() |
Decision (unanimous) | Bellator 209: Pitbull vs. Sanchez | 2018-11-15 | ![]() |
Win | Daniel Weichel | 145 lb | ![]() |
Decision (split) | Bellator 203: Pitbull vs. Weichel 2 | 2018-07-14 | ![]() |
Win | Daniel Straus | 145 lb | ![]() |
Submission (guillotine choke), R2 (0:37) | Bellator 178: Straus vs. Pitbull 4 | 2017-04-21 | ![]() |
Loss | Benson Henderson | 155 lb | TKO (leg injury), R2 (2:26) | Bellator 160: Henderson vs. Pitbull | 2016-08-26 | ![]() |
|
Win | Henry Corrales | 145 lb | Submission (guillotine choke), R2 (4:09) | Bellator 153: Koreshkov vs. Henderson | 2016-04-22 | ![]() |
|
Loss | Daniel Straus | 145 lb | ![]() |
Decision (unanimous) | Bellator 145: Vengeance | 2015-11-06 | ![]() |
Win | Daniel Weichel | 145 lb | ![]() |
KO (punch), R2 (0:32) | Bellator 138: Kimbo vs. Shamrock | 2015-06-19 | ![]() |
Win | Daniel Straus | 145 lb | ![]() |
Submission (rear naked choke), R4 (4:49) | Bellator 132: Pitbull vs. Straus | 2015-01-16 | ![]() |
Win | Pat Curran | 145 lb | ![]() |
Decision (unanimous) | Bellator 123 | 2014-09-05 | ![]() |
Win | Justin Wilcox | 145 lb | ![]() |
TKO (punches), R1 (2:23) | Bellator 108 | 2013-11-15 | ![]() |
Win | Fabricio Guerreiro | 145 lb | ![]() | Decision (unanimous) | Bellator 103 | 2013-10-11 | ![]() |
Win | Diego Nunes | 145 lb | ![]() | KO (punches), R1 (1:19) | Bellator 99 | 2013-09-13 | ![]() |
Win | Jared Downing | 145 lb | KO (punch), R2 (0:54) | Bellator 97 | 2013-07-31 | ![]() |
|
Loss | Pat Curran | 145 lb | ![]() |
Decision (split) | Bellator 85 | 2013-01-17 | ![]() |
Win | Daniel Straus | 145 lb | ![]() |
Decision (unanimous) | Bellator 45 | 2011-05-21 | ![]() |
Win | Wilson Reis | 145 lb | ![]() | KO (punches), R3 (3:29) | Bellator 41 | 2011-04-16 | ![]() |
Win | Georgi Karakhanyan | 145 lb | ![]() | KO (punches), R3 (0:56) | Bellator 37 | 2011-03-19 | ![]() |
Loss | Joe Warren | 145 lb | ![]() |
Decision (split) | Bellator 23 | 2010-06-24 | ![]() |
Win | Wilson Reis | 145 lb | ![]() | Decision (unanimous) | Bellator 18 | 2010-05-13 | ![]() |
Win | William Romero | 145 lb | ![]() | Submission (heel hook), R1 (2:01) | Bellator 15 | 2010-04-22 | ![]() |


~
Winner: Patricio Freire via Submission (heel hook) in round 1 (2:01)
User #1 | Patricio Freire via Submission in round 2 |
User #2 | Patricio Freire via Submission in round 3 |
User #3 | William Romero via Submission in round 1 |
User #4 | Patricio Freire via Decision |
User #5 | Patricio Freire via KO in round 1 |
User #6 | Patricio Freire via Submission in round 2 |