Joo Sang Yoo
“Zombie Jr.”
Record 9-1South Korea
Next fight
vs. Michael Aswell Jr. — UFC 331, September 19, 2026
The style
Knockout Artist
Bypassed Contender Series · High finish rate · UFC bounce-back
GrapplingStriking
Joo Sang 'Zombie Jr.' Yoo is a 32-year-old South Korean featherweight who signed with the UFC off a performance on Dana White's Lookin' for a Fight, bypassing the Contender Series entirely. He knocked out Jeka Saragih in his UFC debut in June 2025 before being stopped by Daniel Santos four months later, and now looks for his second Octagon win against fellow bounce-back candidate Michael Aswell Jr.
Tale of the tape
| Record | 9-1 |
| Age | 32 |
| Height | 5'7" |
| Reach | 71" |
| Stance | Orthodox |
| Country | South Korea |
| Team | — |
The numbers
Career UFC averages.
| Sig. strikes landed / min | — |
| Striking accuracy | — |
| Sig. strikes absorbed / min | — |
| Striking defense | — |
| Takedowns / 15 min | — |
| Takedown accuracy | — |
| Takedown defense | — |
| Submission attempts / 15 min | — |
How they win
4 KO/TKO1 SUB4 DEC
How they lose
1 KO/TKO0 SUB0 DEC