Coufal, Viktor
Current rating: 1503
Record: 4-4
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 187 | Safranek, Jiri (1500) | Lost 0-2 | -181482 |
| 2sealed | 282 | Dienelt, Ivo (1482) | Won 2-0 | +181500 |
| 3sealed | 136 | Jimenez, Michael (1640) | Lost 0-2 | -151485 |
| 4sealed | 250 | Novak, Jiri 2444 (1484) | Lost 0-2 | -181467 |
| 5sealed | 302 | Jemiolek, Jakub (1463) | Won 2-0 | +171484 |
| 6sealed | 260 | Pesek, Jiri (1484) | Won 2-0 | +181502 |
| 7sealed | 207 | Jurkovsky, Ondrej (1566) | Won 2-0 | +201522 |
| 8sealed | 147 | Rimal, Zbynek (1500) | Lost 0-2 | -191503 |
| average opponent: 1515record: 4-4 | new rating: 1503 | |||