Still active teammates
The following riders that were once teammate of Osamu Sumida are still active.
| # | Rider | Teammates in |
|---|
Most starts together and still active
Riders with the most starts together with Osamu Sumida and still active.
| # | Rider | Starts together |
|---|---|---|
| 1 | WOHLBERG Eric | 3 |
| 2 | WONG Ngai Ching | 2 |
| 3 | GUEDES Ricardo | 1 |
| 4 | INOUE Kazuo | 1 |