| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Matthew | Semelsberger | Semi The Jedi | 6' 1" | 170 lbs. | 75.0" | Switch | 11 | 6 | 0 | |
| Andrei | Semenov | 6' 0" | 185 lbs. | -- | Orthodox | 34 | 9 | 2 | ||
| Mackens | Semerzier | Da Menace | 5' 9" | 145 lbs. | 72.0" | Orthodox | 8 | 4 | 0 | |
| Brandon | Sene | 5' 11" | 205 lbs. | -- | 2 | 2 | 0 | |||
| YeDam | Seo | 5' 2" | 115 lbs. | 63.0" | Orthodox | 6 | 3 | 0 | ||
| Kim In | Seok | 5' 6" | 145 lbs. | -- | Orthodox | 3 | 6 | 0 | ||
| Ray | Seraille | 6' 3" | 246 lbs. | -- | 8 | 9 | 0 | |||
| Ivan | Serati | 6' 0" | 205 lbs. | -- | Orthodox | 12 | 4 | 0 | ||
| Alex | Serdyukov | The Russian Crusher | 6' 2" | 170 lbs. | 74.0" | Orthodox | 8 | 5 | 0 | |
| Nicholas | Sergiacomi | -- | 170 lbs. | -- | 1 | 1 | 0 | |||
| Matt | Serra | The Terra | 5' 6" | 170 lbs. | 68.0" | Orthodox | 11 | 7 | 0 | |
| Nick | Serra | The Mad Monkey | 5' 9" | 170 lbs. | -- | Orthodox | 7 | 3 | 0 | |
| Adrian | Serrano | 5' 8" | 170 lbs. | -- | 56 | 29 | 4 | |||
| Fredy | Serrano | El Profe | 5' 3" | 125 lbs. | 65.0" | Orthodox | 3 | 2 | 0 | |
| Carl | Seumanutafa | 6' 1" | 255 lbs. | -- | Orthodox | 10 | 8 | 0 | ||
| Dan | Severn | The Beast | 6' 2" | 250 lbs. | -- | Southpaw | 101 | 19 | 1 | |
| Rosi | Sexton | The Surgeon | 5' 3" | 135 lbs. | -- | Orthodox | 13 | 5 | 0 | |
| Scott | Shaffer | 5' 7" | 145 lbs. | -- | Orthodox | 0 | 1 | 0 | ||
| Edmen | Shahbazyan | The Golden Boy | 6' 2" | 185 lbs. | 75.0" | Orthodox | 12 | 4 | 0 | |
| Leon | Shahbazyan | 6' 4" | 170 lbs. | 74.0" | Orthodox | 7 | 2 | 0 | ||
| Don | Shainis | Shameless | 5' 6" | 145 lbs. | 67.0" | Orthodox | 12 | 5 | 0 | |
| Liliya | Shakirova | 5' 4" | 125 lbs. | 65.0" | Orthodox | 8 | 2 | 0 | ||
| Kamal | Shalorus | Prince of Persia | 5' 8" | 155 lbs. | 68.0" | Orthodox | 9 | 5 | 2 | |
| Ken | Shamrock | The World's Most Dangerous Man | 6' 1" | 205 lbs. | 72.0" | Orthodox | 28 | 17 | 2 |