Brnak, Petr
Current rating: 1524
Record: 4-3
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 168 | Kukla, Martin (1500) | Won 2-0 | +181518 |
| 2sealed | 145 | Fumagalli, Stefano (1527) | Won 2-0 | +181536 |
| 3sealed | 22 | Fontanella Borras, Llu (1606) | Won 2-1 | +191555 |
| 4sealed | 47 | Luposchainsky, Simon (1494) | Lost 1-2 | -191536 |
| 5sealed | 129 | Breit, Bernhard (1706) | Lost 0-2 | -151521 |
| 6sealed | 183 | Bungard, Oliver (1617) | Won 2-0 | +201541 |
| 7sealed | 156 | Stefan, Jan (1576) | Lost 1-2 | -171524 |
| average opponent: 1575record: 4-3 | new rating: 1524 | |||