Sumio Koyano
| First Name : | Sumio |
| Last name : | Koyano |
| Height : | 5'6" (171cm) |
| Weight : | 200 lbs (91 kg) |
| Birth Date : | 1979-03-07 |
| Country : | Japan |
| Record : | 3 - 5 - 0 (Wins - Losses - Draws) |
| Wins : |
2 Draw (66.67%) 1 Submission (Armbar) (33.33%) |
| Losses : |
1 Decision (Split) (20%) 1 KO (Punches) (20%) 2 TKO (Punches) (40%) 1 TKO (20%) |
| Association : | Ugo Kai / Wild Phoenix |
| Match Stats | ||||||
| Result | Opponent | Method | Event Title | Date | Round | Time |
| Lost | Ryo Kawamura | KO (Punches) | Pancrase - 2006 Neo-Blood Tournament Finals | Jul 28, 2006 | 1 | 1:15 Sec |
| Lost | Hikaru Sato | TKO (Punches) | Pancrase - Spiral 1 | Feb 4, 2005 | 1 | 2:57 Sec |
| Win | Kazuma Muranaka | Draw | ZST - Grand Prix 2 Final Round | Jan 23, 2005 | 1 | 5:00 Sec |
| Lost | Yuta Watanabe | TKO (Punches) | ZST - ZST.6 | Sep 12, 2004 | 1 | 1:35 Sec |
| Lost | Stewart Fulton | Decision (Split) | GCM - Demolition 040118 | Jan 18, 2004 | 2 | 5:00 Sec |