| Fighter | Nickname | Height | Weight | Association | |
 |
Robert Walker | 0'0" (0 m) |
325 lbs (147.42 kg) |
||
|
Robert Bruce | 0'0" (0 m) |
275 lbs (124.74 kg) |
||
|
Robert Haney | 6'0" (1.83 m) |
268 lbs (121.56 kg) |
American Jiu-Jitsu Academy | |
|
Robert Yocum | 6'3" (1.91 m) |
318 lbs (144.24 kg) |
||
|
Robert Grey | 5'11" (1.8 m) |
286 lbs (129.73 kg) |
Chris Rees Academy | |
|
Robert Olivarez | 0'0" (0 m) |
290 lbs (131.54 kg) |
||
|
Robert Pierce | 0'0" (0 m) |
276 lbs (125.19 kg) |
||
|
Robert Allen | 0'0" (0 m) |
280 lbs (127.01 kg) |
||
|
Robert Gomez | 0'0" (0 m) |
290 lbs (131.54 kg) |
||
|
Robert Staples | 0'0" (0 m) |
293 lbs (132.9 kg) |
Staples MMA | |
|
Robin Hahn | 0'0" (0 m) |
268 lbs (121.56 kg) |
Core 360 Centre | |
|
Roger Godinez | "The Animal" | 6'2" (1.88 m) |
320 lbs (145.15 kg) |
|
|
Roger Neff | 5'10" (1.78 m) |
270 lbs (122.47 kg) |
||
|
Rolando Graham | 6'1" (1.85 m) |
280 lbs (127.01 kg) |
||
|
Ron Knutson | 0'0" (0 m) |
330 lbs (149.69 kg) |
||
|
Ronald Hardridge | 0'0" (0 m) |
308 lbs (139.71 kg) |
||
|
Ronald Clark Jr. | 6'0" (1.83 m) |
290 lbs (131.54 kg) |
||
|
Ross Clifton | "The Grizzly" | 6'8" (2.03 m) |
360 lbs (163.29 kg) |
Worsham Team X |
|
Roy Mcrary | 0'0" (0 m) |
320 lbs (145.15 kg) |
||
|
Roy Reyes | 0'0" (0 m) |
315 lbs (142.88 kg) |
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