All available race results Kazuya Kumasaka
| Date | Race | Rank |
| Tour of Thailand | ||
| 01/09 | Stage 1 | 50 |
| 02/09 | Stage 2 | 36 |
| 03/09 | Stage 3 | 44 |
| 04/09 | Stage 4 | 21 |
| 05/09 | Stage 5 | 45 |
| 06/09 | Stage 6 | 17 |
| General Classification | 38 |
Rider information for 2008
| Rank | 4543 |
| Score | 0 |
| Name | Kazuya KUMASAKA |
| Country | Japan |
| Team | Elite without contract |
No results available in season 2010.
Rider information for 2010
| Rank | 4335 |
| Score | 0 |
| Name | Kazuya KUMASAKA |
| Country | Japan |
| Team | Geumsan Ginseng Asia |