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 | 427 (top 89.1% of island) | 824.1 | 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 23 out of 23 months
December 2024
343
926.1
454
0
January 2025
337
925.5
445
1
-0.5
February 2025
354
925
465
2
-0.5
March 2025
356
924.5
469
3
-0.5
April 2025
376
924
492
4
-0.5
May 2025
396
923.5
521
5
-0.5
June 2025
408
923
538
6
-0.5
July 2025
420
922.4
553
7
-0.5
August 2025
415
921.9
539
8
-0.5
September 2025
428
921.4
553
9
-0.5
October 2025
420
920.9
544
10
-0.5
November 2025
420
920.4
544
11
-0.5
December 2025
388
919.9
504
12
-0.5
January 2026
388
919.4
504
13
-0.5
February 2026
443
830
507
0
-89.3
March 2026
440
829.3
504
1
-0.7
April 2026
445
828.5
507
2
-0.7
May 2026
471
827.8
534
3
-0.7
June 2026
473
827
537
4
-0.7
July 2026
467
826.3
530
5
-0.7
August 2026
464
825.6
528
6
-0.7
September 2026
420
824.8
471
7
-0.7
October 2026
427
824.1
479
8
-0.7
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 | 871.80 | 55% |
| Mixed Singlestick | Pool Pools | Luc Wehbe | LOSS | 885.22 | 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 | 1513.96 | 29% |
| Mixed Singlestick | Seeding Pools | Bart Jongsma | LOSS | 1579.09 | 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 | 1464.15 | |
| Mixed Singlestick | Pool Set 1 | Evi Shamoun | WIN | 658.28 | |
| Mixed Singlestick | Pool Set 1 | Andreas Uten | LOSS | 1403.95 |