Dijkstra, Koen
Current rating: 1440
| Grand Prix Brussels 2015 (BFZ standard) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 202 | Kalveram, Stefan (1556) | Lost 0-0 | -161393 |
| 2standard | 475 | Pereira, Eurico (1484) | Won 0-0 | +201413 |
| 3standard | 571 | Bordon Gonzalez, Jose Ramon (1509) | Won 2-1 | +201433 |
| 4standard | 566 | Maurer, Tobias (1645) | Won 2-1 | +221455 |
| 5standard | 245 | Garthe, Tobias (1657) | Lost 0-2 | -151440 |
| 6standard | 476 | Allard, Ragnar (1398) | Won 2-0 | +171457 |
| 7standard | 275 | Violette, Aurelie (1463) | Lost 0-2 | -171440 |
| top | average opponent: 1530record: 4-3 | new rating: 1440 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 10 | Feldhusen, Christ (1500) | Lost 0-2 | -161394 |
| 4standard | 235 | Jasinski, Marcin (1603) | Won 2-0 | +221416 |
| 5standard | 170 | Dedek, Martin (1504) | Lost 1-2 | -171399 |
| 6standard | 350 | Matousek, Pavel (1838) | Won 2-0 | +261425 |
| 7standard | 281 | Ihnat, Peter (1538) | Lost 1-2 | -161409 |
| top | average opponent: 1597record: 2-3 | new rating: 1409 | ||
| Grand Prix Cologne 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Loroff, Claudia (1486) | Won 2-0 | +181518 |
| 2sealed | 61 | Hartmann, Yves (1518) | Lost 1-2 | -181500 |
| 3sealed | 132 | Hubert, Michael (1500) | Lost 1-2 | -181482 |
| 4sealed | 205 | Nielsen, Michael (1548) | Lost 1-2 | -171465 |
| 5sealed | 208 | Schipper, Ernst (1412) | Lost 1-2 | -191446 |
| 6sealed | 206 | Adam, Jan (1447) | Lost 0-2 | -181428 |
| 7sealed | 186 | Cauwelier, Quinten (1432) | Lost 0-2 | -181410 |
| top | average opponent: 1478record: 1-6 | new rating: 1410 | ||