Jack O'Neil
UFC DebutNickname“The Maniac”
Record
Streak
L4
- Fighting out of
- Indiana
- Born
- United States
- Weight class
- Heavyweight
- Height
- 6'0" · 183 cm
Before the UFC
Jack O'Neil 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
91-43-1
.679 win rate
Winning-record opponents
6 of 7
carried winning pro records
Pro bouts faced
18
7 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 18 bouts · 17 promotions · wins by 3 KO · 1 subLOF · LOF 44 · PCF · KOTC · Premier Fight +12
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| L | James Shaw5-2 | KO/TKO | Punches | R1 | 0:48 | LOF 44 | Jan 21, 2011 |
| L | Kyle Gibbons15-5 | Submission | Punches | R1 | 0:23 | PCF | Sep 3, 2010 |
| L | Jeremy Carver | Submission | Punches | R1 | 0:08 | KOTC | Jun 20, 2009 |
| L | Gerald Armfield | KO/TKO | Punches | R1 | 1:28 | Premier Fight | May 30, 2009 |
| W | Michael Asher | KO/TKO | Punches | R1 | 1:00 | LOF 31 | Apr 10, 2009 |
| L | Marven Lemock | KO/TKO | Submission to Punches | R1 | 0:35 | LOF 30 | Feb 6, 2009 |
| L | James Simon | KO/TKO | Punches | R1 | 0:31 | LOF 28 | Oct 24, 2008 |
| L | Michael Asher | Submission | Choke | R1 | 1:45 | LOF 27 | Aug 29, 2008 |
| L | Jimmy Jenkins | KO/TKO | Punches | R1 | 2:29 | LOF 15 | Apr 27, 2007 |
| L | Dustin Neace25-21-1 | Submission | Choke | R1 | 1:47 | LOF | Apr 13, 2007 |
| L | Jesse Chilton11-3 | KO/TKO | Punches | R1 | 0:36 | LOF 14 | Mar 23, 2007 |
| L | Jeremy Norton14-6 | Submission | Guillotine Choke | R1 | 3:08 | LOF 11 | Dec 8, 2006 |
| L | Mike Camp2-2 | KO/TKO | Submission to Strikes | R1 | 1:13 | Evolution 4 | Aug 26, 2006 |
| W | Rex Spiker | Submission | Rear Naked Choke | R1 | 2:05 | Evolution 3 | Aug 5, 2006 |
| W | Rex Spiker | KO/TKO | Punch | R1 | 0:13 | Evolution 2 | Jul 15, 2006 |
| L | Jon Schalk | KO/TKO | Punches | R1 | — | LOF 5 | Feb 24, 2006 |
| L | Chris Price19-4 | KO/TKO | Punches | R1 | — | LOF | Jan 7, 2006 |
| W | Brian Salada | KO/TKO | Punches | R1 | — | BG 3 | Dec 9, 2005 |
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 promotionECF
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| W | Mike Medov | KO/TKO | — | R1 | 0:22 | ECF | Sep 17, 2005 |
Amateur (pre-professional) bouts — shown for context only and excluded from the professional record and every UFC-scoped metric.