Gyenes, Ondrej
Current rating: 1427
Record: 2-6
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 724 | Akulsin, Martin (1500) | Won 2-1 | +181518 |
| 2sealed | 617 | Kala, Michal (1518) | Lost 1-2 | -181500 |
| 3sealed | 652 | Zahl, Benjamin (1446) | Lost 0-2 | -191481 |
| 4sealed | 822 | Cavanna, Emanuele (1482) | Lost 0-2 | -181463 |
| 5sealed | 799 | Ptacek, Tomas (1463) | Lost 1-2 | -181445 |
| 6sealed | 785 | Dylkowski, Damian (1446) | Lost 0-2 | -181427 |
| 7sealed | 750 | Halouska, Matej (1427) | Lost 0-2 | -181409 |
| 8sealed | 702 | Mares, Josef (1409) | Won 2-0 | +181427 |
| average opponent: 1461record: 2-6 | new rating: 1427 | |||