de Graaf, Marc
Current rating: 1400
| Grand Prix Lille 2016 (modern) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 199 | Baldy, Nicolas (1406) | Draw 1-1 | 01450 |
| 2modern | 410 | Lespinas, Didier (1537) | Lost 0-2 | -171433 |
| 3modern | 758 | Mace, Vivien (1457) | Lost 1-2 | -171416 |
| 4modern | 821 | Huygen, Onno (1439) | Lost 1-2 | -181398 |
| 5modern | 842 | Maroye, Victor (1447) | Won 2-0 | +191417 |
| 6modern | 749 | Ratano, Gabriel (1463) | Lost 0-2 | -171400 |
| top | average opponent: 1458record: 1-4-1 | new rating: 1400 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 427 | Cattrysse, Sabbe (1668) | Lost 0-2 | -151482 |
| 2standard | 622 | Heynen, Paul (1727) | Lost 1-2 | -131469 |
| 3standard | 714 | van Nunspeet, Tessa (1469) | Lost 0-2 | -181451 |
| 4standard | 712 | Esten, Rob (1444) | Won 2-0 | +171468 |
| 5standard | 640 | Liu, Jay (1465) | Lost 1-2 | -181450 |
| top | average opponent: 1555record: 1-4 | new rating: 1450 | ||
| Grand Prix Antwerp 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 429 | Desmet, Thomas (1433) | Won 2-0 | +171517 |
| 2modern | 333 | Gioria, Julien (1500) | Lost 0-2 | -191498 |
| 3modern | 491 | Raugstad, Oddvar (1557) | Lost 0-2 | -161482 |
| 4modern | 618 | Spruijt, Vincent (1440) | Won 2-0 | +171499 |
| 5modern | 536 | van der Vaart, Jasper (1460) | Lost 1-2 | -191480 |
| 6modern | 609 | Menten, Nick (1425) | Won 2-0 | +171497 |
| top | average opponent: 1469record: 3-3 | new rating: 1497 | ||