| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Shawn | Jordan | The Savage | 6' 0" | 260 lbs. | 75.0" | Southpaw | 19 | 8 | 0 | |
| Ivan | Jorge | Batman | 5' 9" | 155 lbs. | 73.0" | Orthodox | 27 | 7 | 0 | |
| Scott | Jorgensen | Young Guns | 5' 5" | 135 lbs. | 66.0" | Orthodox | 15 | 12 | 0 | |
| Gareth | Joseph | -- | 205 lbs. | -- | 9 | 5 | 0 | |||
| Dwight | Joseph | 5' 6" | 135 lbs. | -- | Switch | 5 | 0 | 0 | ||
| Jeff | Joslin | The Inferno | 6' 0" | 170 lbs. | -- | Orthodox | 5 | 3 | 0 | |
| Krzysztof | Jotko | 6' 1" | 185 lbs. | 77.0" | Southpaw | 24 | 6 | 0 | ||
| Alan | Jouban | Brahma | 6' 0" | 170 lbs. | 73.0" | Southpaw | 17 | 7 | 0 | |
| Charles | Jourdain | Air | 5' 9" | 135 lbs. | 69.0" | Switch | 16 | 8 | 1 | |
| Kevin | Jousset | Air | 6' 2" | 170 lbs. | 75.0" | Orthodox | 10 | 4 | 0 | |
| Mike | Joy | 5' 6" | 155 lbs. | -- | Southpaw | 11 | 8 | 0 | ||
| Dustin | Joynson | 6' 6" | 244 lbs. | 78.0" | Orthodox | 5 | 0 | 0 | ||
| Tony | Juarez | -- | 155 lbs. | -- | 1 | 12 | 0 | |||
| Jesse | Juarez | 6' 1" | 170 lbs. | -- | Orthodox | 23 | 12 | 0 | ||
| Ernie | Juarez | The Young Titan | 5' 8" | 145 lbs. | 70.0" | 8 | 1 | 0 | ||
| Anshul | Jubli | King of Lions | 6' 0" | 155 lbs. | 69.0" | Switch | 7 | 2 | 0 | |
| Carli | Judice | Crispy | 5' 7" | 125 lbs. | 68.0" | Southpaw | 5 | 2 | 0 | |
| Steve | Judson | 5' 11" | 230 lbs. | -- | Orthodox | 0 | 2 | 0 | ||
| Luke | Jumeau | The Jedi | 5' 11" | 170 lbs. | 72.0" | Orthodox | 13 | 5 | 0 | |
| Bu-Kyung | Jung | 5' 7" | 154 lbs. | -- | Orthodox | 0 | 4 | 0 | ||
| Chan Sung | Jung | The Korean Zombie | 5' 7" | 145 lbs. | 72.0" | Orthodox | 17 | 8 | 0 | |
| Young Sam | Jung | 5' 8" | 139 lbs. | -- | Orthodox | 4 | 8 | 0 | ||
| Da Woon | Jung | Sseda | 6' 4" | 205 lbs. | 78.0" | Orthodox | 15 | 6 | 1 | |
| Scott | Junk | 6' 1" | 265 lbs. | -- | Orthodox | 8 | 3 | 1 |