Tournament Record - Seiichi Hosokibara In Japanese Amateur Championship
| Played | Winner | Final | Semi-final | Quarter-final | Last 16 | Last 32 | Prize Money | Centuries |
|---|---|---|---|---|---|---|---|---|
| 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Tournament | Finish | Prize Money (GBP) |
|---|---|---|
 2023 Japanese Amateur Championship |
Last 32 | 0 |
| 2022 Japanese Amateur Championship |
Last 24 | 0 |