Dekker, Martin
Current rating: 1463
Record: 1-3
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 147 | Bannwinkler, Benjamin (1434) | Lost 0-2 | -191481 |
| 2sealed | 203 | Krutwagen, Kai (1483) | Won 2-1 | +181499 |
| 3sealed | 165 | Penedo de Saa, Ruben (1497) | Lost 0-2 | -181481 |
| 4sealed | 240 | Hild, Greg (1486) | Lost 1-2 | -181463 |
| average opponent: 1475record: 1-3 | new rating: 1463 | |||