Sperber, Maarten
Current rating: 1498
Record: 4-4
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 154 | Grygar, Jan (1446) | Lost 0-2 | -191481 |
| 2extended | 315 | Vruggink, Joop (1483) | Lost 0-2 | -181463 |
| 3extended | 423 | Langens, Mattias (1464) | Won 2-0 | +181481 |
| 4extended | 324 | Bronsgeest, Bas (1480) | Lost 0-2 | -181463 |
| 5extended | 421 | Vogel, Albert (1463) | Lost 0-2 | -181445 |
| 6extended | 380 | Zejnilagic, Nenad (1429) | Won 2-0 | +181463 |
| 7extended | 305 | Bockelandt, Thomas (1465) | Won 2-1 | +181481 |
| 8extended | 221 | Luchetti, Lorenzo (1460) | Won 2-1 | +171498 |
| average opponent: 1461record: 4-4 | new rating: 1498 | |||