| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Benji | Radach | Razor | 5' 10" | 185 lbs. | -- | Orthodox | 21 | 7 | 0 | |
| Jordan | Radev | 5' 7" | 185 lbs. | -- | Southpaw | 23 | 5 | 0 | ||
| Charles | Radtke | Chuck Buffalo | 5' 9" | 170 lbs. | 72.0" | Orthodox | 10 | 5 | 0 | |
| Loik | Radzhabov | The Tajik Tank | 5' 11" | 155 lbs. | 69.0" | Orthodox | 18 | 6 | 1 | |
| Gilbert | Rael | 5' 8" | 155 lbs. | -- | 1 | 3 | 0 | |||
| Josh | Rafferty | 6' 0" | 170 lbs. | -- | Orthodox | 9 | 8 | 0 | ||
| Marwan | Rahiki | Freaky | 5' 8" | 145 lbs. | 72.0" | Orthodox | 7 | 0 | 0 | |
| Amir | Rahnavardi | 6' 0" | 205 lbs. | -- | Orthodox | 11 | 10 | 0 | ||
| Ricky | Rainey | The Sniper | 6' 1" | 170 lbs. | 77.0" | Switch | 12 | 6 | 0 | |
| Shavkat | Rakhmonov | Nomad | 6' 1" | 170 lbs. | 77.0" | Orthodox | 19 | 0 | 0 | |
| Sora | Rakhmonova | -- | 125 lbs. | -- | 4 | 1 | 0 | |||
| Aleksandar | Rakic | Rocket | 6' 4" | 205 lbs. | 78.0" | Orthodox | 14 | 6 | 0 | |
| Jessica | Rakoczy | The Ragin' | 5' 7" | 115 lbs. | -- | Orthodox | 1 | 5 | 0 | |
| Zygimantas | Ramaska | 5' 11" | 145 lbs. | 71.0" | Orthodox | 9 | 3 | 0 | ||
| Thomas | Ramirez | 6' 1" | 410 lbs. | -- | Sideways | 0 | 1 | 0 | ||
| Hector | Ramirez | Sick Dog | 6' 0" | 205 lbs. | -- | Orthodox | 10 | 6 | 1 | |
| Matt | Ramirez | The Machine | 5' 5" | 125 lbs. | -- | 2 | 3 | 0 | ||
| Steve | Ramirez | 5' 7" | 125 lbs. | -- | 5 | 2 | 0 | |||
| Amador | Ramirez | -- | 135 lbs. | -- | 5 | 4 | 0 | |||
| Mitch | Ramirez | 5' 11" | 155 lbs. | 71.0" | Orthodox | 8 | 3 | 0 | ||
| Andrew | Ramm | The | 6' 1" | 160 lbs. | -- | 4 | 4 | 0 | ||
| Ian | Rammel | 6' 0" | 185 lbs. | -- | 7 | 8 | 0 | |||
| Luis | Ramos | Beicao | 5' 8" | 170 lbs. | -- | Orthodox | 20 | 10 | 2 | |
| Ricardo | Ramos | 5' 9" | 145 lbs. | 72.0" | Orthodox | 17 | 8 | 0 | ||
| Davi | Ramos | Tasmanian Devil | 5' 6" | 155 lbs. | 70.0" | Orthodox | 10 | 4 | 0 |