Walter, Jakob
Current rating: 1447
Record: 3-6
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 180 | Perez Rodriguez, Jose (1485) | Won 2-0 | +181518 |
| 2sealed | 27 | Barrofet, Xavier (1594) | Lost 0-2 | -171501 |
| 3sealed | 215 | Musil, Vlastimil (1475) | Lost 0-2 | -181483 |
| 4sealed | 324 | Dedecek, Martin (1481) | Won 2-0 | +181501 |
| 5sealed | 203 | Knoff, Henning (1521) | Lost 1-2 | -181483 |
| 6sealed | 228 | Philipp, Dave (1482) | Won 2-1 | +181501 |
| 7sealed | 185 | Vojkuvka, Bohumil (1502) | Lost 0-2 | -181483 |
| 8sealed | 162 | Marsicek, Josef (1485) | Lost 0-2 | -181465 |
| 9sealed | 131 | Jurnicek, Lukas (1461) | Lost 1-2 | -181447 |
| average opponent: 1498record: 3-6 | new rating: 1447 | |||