Van Oystaeyen, Costa
Current rating: 1390
Record: 2-8
| Grand Prix Lille 2016 (modern) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 578 | Mirowski, Vincent (1525) | Lost 1-2 | -171445 |
| 2modern | 690 | Schindler, Adrian (1360) | Lost 0-2 | -191426 |
| 3modern | 864 | Aygueparse, Julien (1434) | Lost 0-2 | -181408 |
| 4modern | 834 | Thunnissen, Robin (1444) | Lost 0-2 | -181390 |
| average opponent: 1441record: 0-4 | new rating: 1390 | |||
| Grand Prix Antwerp 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 260 | Arminen, Ville (1500) | Won 2-1 | +181518 |
| 2modern | 38 | Drapala, Robin (1576) | Won 2-1 | +191537 |
| 3modern | 50 | Reuss, David (1534) | Lost 0-2 | -181519 |
| 4modern | 317 | Bussy, Alexandre (1422) | Lost 0-2 | -201499 |
| 5modern | 453 | Schneider, Flavian (1446) | Lost 0-2 | -191480 |
| 6modern | 524 | Maerevoet, Hidde (1466) | Lost 0-2 | -181462 |
| average opponent: 1491record: 2-4 | new rating: 1462 | |||