Dylan O'Sullivan
UFC DebutNickname“The Soul Snatcher / Dementor”
Record
Streak
L1
Age
Date of birth
- Fighting out of
- Johnson City, Tennessee
- Born
- United States
- Camp
- Kill Cliff FC
- Weight class
- Middleweight
- Height
- 6'1" · 185 cm
Before the UFC
Dylan O'Sullivan 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
DevelopmentalOpponents' combined record
44-66-2
.400 win rate
Winning-record opponents
3 of 8
carried winning pro records
Pro bouts faced
9
8 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 9 bouts · 9 promotions · wins by 5 KO · 1 subBlack Combat · SMMA 43 · Borroka Promotions 2 · Xtreme Fighting Championships · SMMA 26 +4
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| L | Dong Ju Yeo5-1 | KO/TKO | Punches | R1 | 3:03 | Black Combat | Mar 14, 2026 |
| W | R.J. Hayes0-4 | KO/TKO | — | R1 | 0:15 | SMMA 43 | Aug 30, 2025 |
| L | Trent Miller9-3 | Decision | Split | R3 | 5:00 | Borroka Promotions 2 | Mar 28, 2025 |
| L | Thomas Lane | Submission | Rear-Naked Choke | R1 | 1:22 | Xtreme Fighting Championships | Apr 12, 2024 |
| W | Clarence Jordan11-8-1 | KO/TKO | Strikes | R1 | 4:07 | SMMA 26 | Jun 25, 2022 |
| W | Chase Gamble7-10 | KO/TKO | Strikes | R1 | 3:36 | SMMA 24 | Mar 26, 2022 |
| W | Gregory Sizemore Jr.9-9-1 | KO/TKO | — | R1 | 2:33 | SMMA 21 | Sep 3, 2021 |
| W | KO/TKO | — | R1 | 1:27 | SMMA 17 | Mar 27, 2021 | |
| W | Clarence Brown3-26 | Submission | — | R1 | 4:52 | SMMA 14 | Oct 10, 2020 |
Non-UFC bouts (regional/other promotions) — shown for context only, excluded from Schedule Score, striking/grappling rates, and every UFC-scoped metric.
Amateur
3-3across 6 amateur bouts · 6 promotionsSMMA 12 · XFN 27 · SMMA 10 · SMMA · Warrior FC 142 +1
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| L | Josh Baker2-2 | Submission | Guillotine Choke | R2 | 0:23 | SMMA 12 | Jun 20, 2020 |
| L | Fernando Reyes | Submission | Rear Naked Choke | R1 | 0:00 | XFN 27 | Feb 9, 2020 |
| W | Decision | Split | R3 | 3:00 | SMMA 10 | Nov 16, 2019 | |
| W | Hunter Perez | Submission | Rear Naked Choke | R1 | 1:37 | SMMA | Jul 13, 2019 |
| L | Hunter Spehar7-2 | Decision | Unanimous | R3 | 3:00 | Warrior FC 142 | May 11, 2019 |
| W | Austin Cox2-5 | KO/TKO | Punches | R3 | 1:35 | 864 Fighting Championship | Jan 25, 2019 |
Amateur (pre-professional) bouts — shown for context only and excluded from the professional record and every UFC-scoped metric.