John Roman Williams boxer
- bouts
- 26
- won
- 19
- lost
- 6
- draw
- 0
- Status
- inactive
- Division
- light heavyweight
- Debut
- 2000-08-25
- Height
- 6′ 2″/188cm
- Reach
- -
- Age
- -
- Born
- 1976-09-20
- Death
- -
- Nationality
- Costa Rica
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2010-07-31 | Ambar Loboa | WLWWWL | Gimnasio Nº 1 de La Sabana, San Jose | WIN KO |
| 2007-01-19 | George Blades | WLWWWW | Mallory Square, Key West | LOST Technical knockout |
| 2006-09-23 | Vincent Harris | WLLLLL | Mallory Square, Key West | WIN Unanimous decision |
| 2006-02-28 | Milton Carvajal | LWLLL | Hotel Barcelo San Jose Palacio, San Jose | WIN Technical knockout |
| 2005-08-26 | Willie Stewart | WWWWWL | Golden Acorn Casino, Campo | WIN |
| 2005-03-11 | Ron Krull | LLLLL | Concordia Theater, Cicero | WIN Technical knockout |
| 2005-02-04 | Gregory Holmes | WWL | Racquetball Club, Chicago | WIN Technical knockout |
| 2004-11-27 | William Guthrie | WWWWLD | Louisville Gardens, Louisville | LOST KO |
| 2004-05-21 | Gary Gomez | WWWWWW | The Belvedere, Elk Grove Village | LOST Unanimous decision |
| 2004-03-05 | Vinson Durham | LLDLLL | Ramada Inn, Rosemont | NC |
| 2004-02-06 | Donnie Penelton | LLLLDL | Raquet Club, Chicago | WIN Unanimous decision |
| 2003-11-26 | Gary Gomez | LWLWWW | Ramada Inn, Rosemont | LOST Split-decision |
| 2003-09-05 | Eric French | LLLLLL | Ramada Inn, Rosemont | WIN KO |
| 2003-07-18 | Larry Prather | LLLLLL | DePaul Athletic Center, Chicago | WIN Unanimous decision |
| 2003-06-06 | Vinson Durham | LLLWWL | Park West Theatre, Chicago | WIN Unanimous decision |
| 2002-10-25 | Chad Dawson | WWWWWW | Foxwoods Resort, Mashantucket | LOST Technical knockout |
| 2002-06-07 | Kwan Manasseh | LLLLLL | Ramada Inn, Rosemont | WIN Unanimous decision |
| 2001-11-21 | Joey DeGrandis | WWLWWW | Ramada Inn, Rosemont | LOST Technical knockout |
| 2001-10-17 | Dino Newville | LLWWLL | Ramada Inn, Rosemont | WIN Technical knockout |
| 2001-09-28 | Ruben Ruiz | LLLLLL | Fiesta Palace, Waukegan | WIN Technical knockout |
| 2001-05-10 | Brian Maclin | WLLWW | Casino Queen, East Saint Louis | WIN Technical knockout |
| 2001-02-02 | Barton Spears | LLLLLL | WIN Points |
|
| 2000-11-22 | Ali Supreme | WWWLL | Holiday Inn, Hillside | WIN Technical knockout |
| 2000-10-06 | Doug Brown | LWWDL | Janesville | WIN Points |
| 2000-09-13 | Donnie Penelton | LLLLLL | Hollywood Casino, Aurora | WIN Unanimous decision |
| 2000-08-25 | Donald Tucker | LLLLLL | Lake County Sports Club, Waukegan | WIN KO |