Jaap Koster
| Club | Steelbound |
| Nationality | Netherlands |
Ratings
| Category | Rank (current) | Weighted Rating (current) | Rank (best) | Weighted Rating (best) |
|---|---|---|---|---|
| Singlestick | ||||
| - Mixed & Men's Singlestick | 416 (top 77% of island) | 921.4 | 338 (January 2025) | 926.1 (December 2024) |
Record
| Division | Total | Win | Loss | Draw | Other |
|---|---|---|---|---|---|
| Mixed Singlestick | 4 | 1 | 3 | 0 | 0 |