Willemsen, Jan
Current rating: 1519
Record: 4-3
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 489 | Hulscher, Ruud (1500) | Lost 0-2 | -181482 |
| 2sealed | 519 | Bergman, Martin (1419) | Won 2-0 | +171499 |
| 3sealed | 563 | Schraverus, Gijs (1504) | Won 2-1 | +181517 |
| 4sealed | 289 | Buchholtz, Gregory (1493) | Lost 0-2 | -181499 |
| 5sealed | 492 | Brodzak, Michal (1581) | Lost 0-2 | -171482 |
| 6sealed | 408 | Harasymiw, Mac (1500) | Won 2-0 | +181500 |
| 7sealed | 325 | Pinto, Tiago (1545) | Won 2-0 | +191519 |
| average opponent: 1506record: 4-3 | new rating: 1519 | |||