| Pro Record: | 8-3-0 (Win-Loss-Draw) |
| Team: | |
| Age: | 29 |
| Sex: | Male |
| Height: | 5 Feet. 9 Inch(es). |
| Weight: | 145 lbs. |
| Out of: | Onterio |
William Romero's Professional Record
| Date | Result | Opponent | Event | Method | Round | Time | ||
|---|---|---|---|---|---|---|---|---|
| 05/04/2012 | Win | Matt Veal | Bellator Fighting Championships 67 | TKO/RSC | 2 | 4:25 | ||
| 10/14/2011 | Win | Stephane Bernadel | Score Fighting Series 10/14/11 | KO | 1 | 3:07 | ||
| 07/23/2011 | Win | Daniel Langbeen | Bellator Fighting Championships 47 | Decision Unanimous Decision | 3 | |||
| 06/10/2011 | Loss | Tristan Johnson | Score Fighting Series 06/10/11 | Decision Unanimous Decision | 3 | |||
| 03/11/2011 | Loss | Adam Lorenz | Aggression MMA 03/11/11 | Decision Unanimous Decision | 3 | |||
| 04/22/2010 | Loss | Patricio Freire | Bellator Fighting Championships 15 | Submission Heel Hook | 1 | 2:01 | ||
| 08/22/2009 | Win | Guillaume Lamarche | Quebec Inc: Ringside 08/22/09 | KO | 1 | 0:17 | ||
| 02/27/2009 | Win | Mitch Gagnon | XMMA 2/27/09 | Decision Unanimous Decision | 3 | |||
| NSF | 11/22/2008 | Win | Sean Tourand | Iroquois MMA Championships VI | Submission Triangle Choke | 2 | 2:21 | |
| NSF | 09/27/2008 | Win | Mike Roberts | Iroquois MMA Championships 5 | Submission Guillotine Choke | 4 | 3:05 |
|
| NSF | 06/21/2008 | Win | Mike Roberts | Iroquois MMA Championships 4 | TKO/RSC Referee Stoppage from Strikes | 2 | 4:58 |
| Bout results verified by an official State, Tribal, Provincial, or Municipal Commission. | |
| NSF: | Non Sanctioned Fight |
| * : | For a variety of reasons, including weight disparity and the demands of entertainment, Exhibition Bouts are held, in which the contest is unscripted and hard fought, but the results do not count on a fighter's Official Record. |
| NC: | Fight Declared No Contest |


