Kosak, Petr
Current rating: 1483
Record: 3-4
| Grand Prix Prague 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 95 | Benda, Petr (1500) | Won 2-1 | +181518 |
| 2sealed | 134 | Zajac, Daniel (1518) | Won 2-0 | +181536 |
| 3sealed | 5 | Miller, Martin (1526) | Lost 0-2 | -181518 |
| 4sealed | 128 | Peca, Kamil (1517) | Lost 0-2 | -181500 |
| 5sealed | 206 | Hauk, Peter (1533) | Lost 1-2 | -181482 |
| 6sealed | 220 | Guttner, Jan (1483) | Won 2-0 | +181500 |
| 7sealed | 141 | Marcik, Michal (1531) | Lost 0-2 | -171483 |
| average opponent: 1516record: 3-4 | new rating: 1483 | |||