Van Osselaer, Sean
Current rating: 1501
Record: 11-13
| Grand Prix Barcelona 2009 (ARB standard) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 411 | Rodriguez, Daniel 5725 (1500) | Lost 1-2 | -171440 |
| 3standard | 586 | Mayor Perez, Toni (1498) | Won 2-0 | +191459 |
| 4standard | 577 | Varbanov, Svetlin (1466) | Lost 0-2 | -181441 |
| 5standard | 654 | Garcia, Rafael [ESP] (1453) | Won 2-0 | +181459 |
| 6standard | 533 | Ibanez Tienda, Eduardo (1523) | Won 2-1 | +191478 |
| 7standard | 545 | Renaille, Gaetan (1554) | Won 2-0 | +201498 |
| 8standard | 459 | Quesada, Rafael Carlos (1566) | Won 2-1 | +191517 |
| 9standard | 466 | Olarte Ovalle, Alvaro Edward (1641) | Lost 1-2 | -161501 |
| top | average opponent: 1525record: 5-3 | new rating: 1501 | ||
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1419 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 496 | Volk, Philipp (1498) | Won 2-0 | +201439 |
| 3sealed | 481 | Dols, Roel (1749) | Won 2-1 | +231462 |
| 4sealed | 434 | Horvath, Tamas (1627) | Lost 0-2 | -151447 |
| 5sealed | 458 | van Houts, Kevin (1574) | Lost 0-2 | -161431 |
| 6sealed | 519 | Boskaljon, Willem (1516) | Won 2-1 | +201451 |
| 7sealed | 502 | Magi, Sander (1646) | Won 2-1 | +211472 |
| 8sealed | 441 | Frederiksen, Anders (1606) | Lost 1-2 | -151457 |
| top | average opponent: 1602record: 4-3 | new rating: 1457 | ||
| Grand Prix Paris 2008 (ALA limited) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 35 | van der Vaart, Henk (1506) | Lost 1-2 | -171419 |
| top | record: 0-1 | new rating: 1419 | ||
| Grand Prix Madrid 2008 (EVE limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 72 | Rubies Mouliaa, Joan (1538) | Won 2-0 | +191483 |
| 5sealed | 28 | Bosler, Fabian (1548) | Lost 1-2 | -161467 |
| 6sealed | 83 | Krebs, Markus (1667) | Lost 0-2 | -151452 |
| 7sealed | 106 | Pereira, Luis (1538) | Lost 0-2 | -161436 |
| top | average opponent: 1573record: 1-3 | new rating: 1436 | ||
| Grand Prix Hasselt 2006 (RAV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 107 | Kleij, Rogier (1523) | Lost 0-2 | -181482 |
| 2sealed | 156 | Caprara, Quentin (1483) | Won 2-0 | +181500 |
| 3sealed | 141 | Strzalka, Alexandre (1482) | Lost 1-2 | -181482 |
| 4sealed | 205 | Baro, Christophe (1482) | Lost 1-2 | -181464 |
| top | average opponent: 1493record: 1-3 | new rating: 1464 | ||