de Jongh, Mark
Current rating: 1465
Record: 4-6
| Grand Prix Madrid 2012 (DKA limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | Florez, Sergio (1439) | Won 2-0 | +171503 |
| 2sealed | 5 | Von Loh, Ivan (1500) | Lost 1-2 | -181485 |
| 3sealed | 134 | Sanchez Torres, Manuel (1500) | Lost 1-2 | -171468 |
| 4sealed | 296 | Galvao, Diogo (1483) | Won 2-1 | +181486 |
| 5sealed | 254 | Kelterbaum, Richard (1347) | Lost 0-2 | -211465 |
| average opponent: 1454record: 2-3 | new rating: 1465 | |||
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 356 | Waelkens, Wim (1557) | Won 2-0 | +191519 |
| 2extended | 25 | Sele, Yves (1642) | Lost 1-2 | -161503 |
| 3extended | 277 | Scheps, Sander (1500) | Lost 1-2 | -181485 |
| 4extended | 418 | Dohnal, Roman (1465) | Won 2-1 | +181503 |
| 5extended | 225 | van Ravesteijn, Tom (1577) | Lost 0-2 | -171486 |
| average opponent: 1548record: 2-3 | new rating: 1486 | |||