Jaap Koster
| Club | Steelbound |
| Nationality | Netherlands |
Badges
| Charity tournament participant (HVN Singlestick Charity Tournament 2026) |
Ratings
| Category | Last competed | Rank (current) | Weighted Rating (current) | Rank (best) | Weighted Rating (best) |
|---|---|---|---|---|---|
| Singlestick | |||||
| - Mixed & Men's Singlestick | February 2026 | 451 (top 88% of island) | 826.3 | 337 (January 2025) | 926.1 (December 2024) |
Record
| Division | Total | Win | Loss | Draw | Other |
|---|---|---|---|---|---|
| Mixed Singlestick | 11 | 1 | 10 | 0 | 0 |
Full rating histories
Mixed & Men's Singlestick
The fighter has been on an island, I.E. has no direct link to most fighters, in 20 out of 20 months
December 2024
343
926.1
January 2025
337
925.5
February 2025
354
925
March 2025
356
924.5
April 2025
376
924
May 2025
396
923.5
June 2025
408
923
July 2025
420
922.4
August 2025
415
921.9
September 2025
428
921.4
October 2025
420
920.9
November 2025
420
920.4
December 2025
388
919.9
January 2026
388
919.4
February 2026
443
830
March 2026
440
829.3
April 2026
445
828.5
May 2026
471
827.8
June 2026
457
827
July 2026
451
826.3
Match results
Mixed & Men's Singlestick - 11 fights
February 2026 - HVN Singlestick Charity Tournament 2026
HVN Singlestick Charity Tournament 2026
| Division | Stage | Opponent | Outcome | Opponent rating | Win chance |
|---|---|---|---|---|---|
| Mixed Singlestick | Pool Pools | Eline Rietema | LOSS | 871.79 | 55% |
| Mixed Singlestick | Pool Pools | Luc Wehbe | LOSS | 885.21 | 57% |
| Mixed Singlestick | Pool Pools | Kari Derks | LOSS | Unrated | |
| Mixed Singlestick | Pool Pools | Mykhaylo Skorobogatov | LOSS | 1716.57 | 20% |
| Mixed Singlestick | Seeding Pools | Tim Beerens | LOSS | 1513.95 | 29% |
| Mixed Singlestick | Seeding Pools | Bart Jongsma | LOSS | 1579.08 | 26% |
| Mixed Singlestick | Seeding Pools | Fien Willighagen | LOSS | Unrated |
December 2024 - Charity Singlestick Tournament 2024
Charity Singlestick Tournament 2024
| Division | Stage | Opponent | Outcome | Opponent rating | Win chance |
|---|---|---|---|---|---|
| Mixed Singlestick | Pool Set 1 | Pieter van der Werff | LOSS | Unrated | |
| Mixed Singlestick | Pool Set 1 | Julien Wattez | LOSS | 1464.17 | |
| Mixed Singlestick | Pool Set 1 | Evi Shamoun | WIN | 658.30 | |
| Mixed Singlestick | Pool Set 1 | Andreas Uten | LOSS | 1403.97 |