Ewijk, Gerard
Current rating: 1406
Record: 9-15-1
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 588 | van Houts, Kevin (1536) | Lost 1-2 | -161420 |
| 2sealed | 590 | Loison, Yannick (1429) | Lost 0-2 | -181402 |
| 3sealed | 656 | Gressens, Wim (1464) | Lost 1-2 | -171385 |
| 4sealed | 679 | Roos, Maarten (1537) | Won 2-0 | +211406 |
| top | average opponent: 1492record: 1-3 | new rating: 1406 | ||
| Grand Prix Athens 2006 (TSP limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 48 | Ventouris, George (1500) | Won 2-0 | +191468 |
| 2sealed | 73 | Mavrakis, Andreas (1500) | Won 2-1 | +191487 |
| 3sealed | 35 | Tassani, Matteo (1536) | Won 2-1 | +191506 |
| 4sealed | 10 | Kazantzis, Nikos (1553) | Lost 0-2 | -171489 |
| 5sealed | 67 | Larsen, Christoffer (1433) | Lost 1-2 | -191470 |
| 6sealed | 87 | Hauchard, Francois (1532) | Lost 0-2 | -171453 |
| 7sealed | 116 | Kokkalas, Alexandros (1499) | Lost 0-2 | -171436 |
| top | average opponent: 1508record: 3-4 | new rating: 1436 | ||
| Grand Prix Copenhagen 2005 (extended) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 58 | Nielsen, Jon (1488) | Lost 1-2 | -181465 |
| 2extended | 106 | Hofmann, Mike (1513) | Lost 1-2 | -171448 |
| 3extended | 137 | Sollner, Christian (1499) | Lost 1-2 | -171431 |
| 4extended | 156 | Michan, Rimmy (1446) | Won 2-0 | +181449 |
| 5extended | 141 | Carmelo, Victor Adrian (1466) | Lost 1-2 | -181431 |
| 6extended | 137 | Juhl, Daniel Dahl (1449) | Lost 0-2 | -181413 |
| 7extended | 113 | Paunku, Oktavian (1402) | Won 2-1 | +181431 |
| 8extended | 100 | Stamer, Dirk (1446) | Won 2-0 | +181449 |
| top | average opponent: 1464record: 3-5 | new rating: 1449 | ||
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 48 | Cornet, Yves (1384) | Lost 0-2 | -201480 |
| 2extended | 324 | Steinmeyer, Mark (1482) | Won 2-1 | +181498 |
| 3extended | 343 | Salamon, Michal (1685) | Lost 0-2 | -151483 |
| 4extended | 403 | Klose, Stephan (1506) | Lost 0-2 | -171466 |
| 5extended | 430 | Weber, Robert (1407) | Draw 1-1 | -11465 |
| 6extended | 353 | van de Heiden, Paul (1463) | Won 2-0 | +181483 |
| top | average opponent: 1488record: 2-3-1 | new rating: 1483 | ||