| Age | 24 |
|---|---|
| Gender | Male |
| Height | 5' 5" |
| Weight Class | Bantamweight |
Seiji Shirai is a MMA fighter with a professional fight record of 4 wins, 1 losses and 0 draws
| Pro Record | 4-1-0 (Win-Loss-Draw) |
|---|---|
| Career Length | 1 year, 8 months, 14 days |
| Rounds Fought | 14.1 |
| Avg. Fights/Year | 3.0 |
| Longest Layoff | 8 months, 29 days |
| Quickest Turnaround | 1 month, 25 days |
| Date | Opponent | Weightclass | Method | Round | Time | |||
|---|---|---|---|---|---|---|---|---|
| NSF | 11/09/2025 | W (3-1-0) | Yuji Sato (3-1-0) | BW | Decision (Split Decision) Pancrase 358 | 3 | 05:00 | |
| NSF | 02/11/2025 | W (2-1-0) | Kouki Hirasawa (1-6-0) | BW | Decision (Unanimous Decision) Pancrase: Blood 5 | 3 | 05:00 | |
| NSF | 07/21/2024 | L (2-0-0) | Daiki Arata (2-0-0) | BW | Decision (Unanimous Decision) Pancrase 346 | 3 | 05:00 | |
| NSF | 05/25/2024 | W (1-0-0) | Misaki Umehara (2-3-0) | BW | Decision (Unanimous Decision) Pancrase 343 | 3 | 05:00 | |
| NSF | 02/25/2024 | W (0-0-0) | Taka Rindaman (0-0-0) | BW | TKO/RSC (Referee Stoppage from Punches) Pancrase: Blood 2 | 3 | 00:39 |
| * Bouts marked with an 'Official' logo denote results which have been verified by an ABC-recognized athletic commission * Bouts marked with an (*) are considered exhibition bouts and do not count towards the fighter's record * Weights marked with an (*) denote those over the limit for the weight class |