Chaun Sims
UFC Debut
Record
Streak
L1
- Fighting out of
- Boulder, Colorado
- Born
- United States
- Weight class
- Middleweight
- Height
- 6'2" · 188 cm
Before the UFC
Chaun Sims makes their UFC debut
Our striking, grappling, and schedule metrics are measured from UFC fights, so they come online after this bout. Here is the career they bring in — and how live the opposition has been.
Pre-UFC opposition
StrongOpponents' combined record
82-48
.631 win rate
Winning-record opponents
4 of 5
carried winning pro records
Pro bouts faced
7
5 opponents with records on file
A descriptive read of the non-UFC slate from opponents’ full career pro records — not a UFC-grade Schedule Score.
UFC fight history
No UFC bouts on record yet.
Outside the UFC
across 7 bouts · 5 promotions · wins by 2 KO · 3 subFTW · ROF 40 · Nemesis Fighting · RMBB · ROF 38
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| L | Cezar Ferreira14-11 | KO/TKO | Punch | R1 | 0:17 | ROF 40 | Apr 16, 2011 |
| W | Oscar Sosa15-5 | Submission | Armbar | R3 | — | Nemesis Fighting | Dec 11, 2010 |
| W | Forrest Clouse | KO/TKO | Submission to Punches | R2 | 1:10 | RMBB | Sep 24, 2010 |
| L | KO/TKO | Punch | R1 | 3:38 | ROF 38 | Jun 5, 2010 | |
| W | Mike Fleniken | Submission | Rear-Naked Choke | R1 | 1:18 | FTW | Apr 17, 2010 |
| W | Submission | Rear-Naked Choke | R1 | 4:16 | FTW | Jul 10, 2009 | |
| W | Anthony Smith39-22 | KO/TKO | Punches | R2 | 2:00 | FTW | Mar 14, 2009 |
Non-UFC bouts (regional/other promotions) and Dana White’s Contender Series — shown for context only, excluded from Schedule Score, striking/grappling rates, and every UFC-scoped metric.
Amateur
1-0across 1 amateur bout · 1 promotionRMBB
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| W | Mike Camp1-1 | Submission | — | R1 | 1:25 | RMBB | Feb 21, 2008 |
Amateur (pre-professional) bouts — shown for context only and excluded from the professional record and every UFC-scoped metric.

