Sean Loeffler
UFC DebutNickname“The Destroyer”
Record
Streak
W15
Age
Date of birth
- Fighting out of
- Hermosa Beach, California
- Born
- United States
- Weight class
- Middleweight
- Height
- 6'3" · 191 cm
Before the UFC
Sean Loeffler 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.
UFC debut
Aug 20, 2026
Pre-UFC opposition
DevelopmentalOpponents' combined record
257-386-4
.400 win rate
Winning-record opponents
9 of 31
carried winning pro records
Pro bouts faced
39
31 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 39 bouts · 20 promotions · wins by 16 KO · 17 sub · 1 decGladiator Challenge · KOTC · Xplode Fight Series · Tru-Form Entertainment · SBP +15
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| W | Jon Nelson0-2 | KO/TKO | Punches | R1 | 0:14 | Gladiator Challenge | Mar 7, 2020 |
| W | Josh Tamsen5-18 | KO/TKO | Punches | R1 | — | CCW | Apr 28, 2019 |
| W | Patrick Smith20-17 | KO/TKO | Head Kick | R1 | 0:08 | Gladiator Challenge | Jul 23, 2016 |
| W | Aaron Brink29-27 | KO/TKO | Punch | R1 | 0:04 | Gladiator Challenge | Apr 2, 2016 |
| W | John Ramirez | KO/TKO | Punches | R2 | 1:01 | Tru-Form Entertainment | Oct 17, 2015 |
| W | John Tarrh | Submission | Kneebar | R1 | 0:43 | Tru-Form Entertainment | Aug 22, 2015 |
| W | Ronald LeBreton Jr.7-11 | Submission | Armbar | R1 | 1:56 | Xplode Fight Series | Mar 21, 2015 |
| W | William Johnson9-27 | Submission | Omoplata | R1 | 0:36 | Gladiator Challenge | Aug 23, 2014 |
| W | Travis McCullough20-47 | Submission | Keylock | R1 | 1:47 | Xplode Fight Series | Jun 20, 2014 |
| W | KO/TKO | Punch | R1 | 0:07 | Gladiator Challenge | Sep 24, 2011 | |
| W | Brandon Gaines5-21 | Submission | Armbar | R1 | 0:59 | Xplode Fight Series | Aug 6, 2011 |
| W | John Doyle11-22 | Submission | Rear-Naked Choke | R1 | 4:29 | AMMAFL 2 | Jun 4, 2011 |
| W | Reed Rutherford | KO/TKO | Head Kick | R1 | 0:14 | Gladiator Challenge | Dec 12, 2010 |
| W | David Hayes6-4 | KO/TKO | Head Kick and Punches | R1 | 0:55 | Gladiator Challenge | Aug 20, 2010 |
| W | Brendan Ellison | Submission | Armbar | R1 | 0:19 | Gladiator Challenge | Jun 27, 2010 |
| L | Bryan Baker18-6 | KO/TKO | Punches | R1 | 2:43 | BFC | Apr 29, 2010 |
| W | Sam Salas | KO/TKO | Punches | R1 | 0:30 | Gladiator Challenge | Feb 21, 2010 |
| W | Steve Schneider15-22-1 | Submission | Kimura | R1 | 2:30 | SBP | Aug 21, 2009 |
| W | Jason Anderson13-34 | Submission | Armbar | R1 | 0:32 | SBP | Jul 17, 2009 |
| W | Christian Fulgium8-10 | Submission | Armbar | R1 | 3:14 | CFC | Jun 26, 2009 |
| W | Rubin Taigle4-4 | Submission | Rear-Naked Choke | R1 | 0:36 | Gladiator Challenge | Jan 25, 2009 |
| W | Paul Karsky13-24-1 | Submission | Guillotine Choke | R1 | 2:25 | Havic Prizefighting | Nov 22, 2008 |
| L | Paul Karsky13-24-1 | KO/TKO | Injury | R1 | 0:35 | TFA 12 | Sep 13, 2008 |
| L | Edgar Garcia14-5 | KO/TKO | Injury | R1 | 1:59 | Total Combat | May 10, 2008 |
| W | Bobby Martinez9-13 | Submission | Armbar | R1 | 3:11 | IFBL | Feb 23, 2008 |
| W | Brian Smith0-4 | KO/TKO | Punches | R1 | 1:18 | TC 24 | Nov 4, 2007 |
| L | Keith Berry17-15-1 | Submission | Triangle Choke | R1 | 2:05 | KOTC | Aug 5, 2007 |
| W | Rubin Taigle4-4 | Submission | Keylock | R1 | 0:22 | KOTC | Jun 8, 2007 |
| L | Decision | Majority | R2 | 5:00 | KOTC | Apr 27, 2007 | |
| W | Dan Axe0-1 | Submission | Rear-Naked Choke | R1 | 0:15 | KOTC | Mar 10, 2007 |
| W | David Beebe0-1 | Submission | Rear-Naked Choke | R1 | 1:08 | KOTC | Dec 1, 2006 |
| W | Lamar Parker | KO/TKO | Knee | R1 | 0:13 | IE | Aug 26, 2006 |
| W | Brandon Cole1-1 | Decision | Unanimous | R3 | 0:00 | COF 2 | Jul 9, 2006 |
| W | Submission | Triangle Choke | R1 | 4:50 | IFBL | Apr 1, 2006 | |
| W | Paul Wilborne0-2 | KO/TKO | Punch | R1 | 0:07 | TFA 1 | Dec 10, 2005 |
| W | Brian Shoffner3-2 | KO/TKO | Punches | R1 | 2:00 | MCU | Sep 12, 2004 |
| W | KO/TKO | Punch | R2 | 0:12 | RM 3 | Mar 14, 2003 | |
| W | Marcus Johnson | KO/TKO | — | R1 | 1:33 | KK | Jul 9, 2001 |
| W | Kurt Smith | KO/TKO | Kick | R2 | 1:00 | KK | Aug 15, 2000 |
Non-UFC bouts (regional/other promotions) — shown for context only, excluded from Schedule Score, striking/grappling rates, and every UFC-scoped metric.