Mahdal, Oldrich
Current rating: 1555
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 326 | Ptasznik, Mikolaj (1464) | Won 2-1 | +181513 |
| 2sealed | 339 | Wlodarczyk, Przemyslaw (1527) | Won 2-1 | +181531 |
| 3sealed | 131 | Zubovich, Stanislau (1708) | Lost 1-2 | -151516 |
| 4sealed | 216 | Dictus, Mark (1608) | Draw 1-1 | +21518 |
| 5sealed | 213 | Adamus, David (1517) | Won 2-1 | +181536 |
| 6sealed | 132 | Wiseman, Robert (1425) | Won 2-1 | +161552 |
| 7sealed | 216 | Klepczarek, Lukasz (1676) | Won 2-1 | +201572 |
| 8sealed | 236 | Schoots, Isha (1600) | Lost 1-2 | -171555 |
| top | average opponent: 1566record: 5-2-1 | new rating: 1555 | ||
| Grand Prix Prague 2013 (M14 limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 293 | Papso, Matej (1500) | Won 2-0 | +181524 |
| 2sealed | 69 | Mokrusch, Kai (1518) | Lost 0-2 | -181506 |
| 3sealed | 350 | Langer, Tomas (1748) | Lost 1-2 | -141492 |
| 4sealed | 573 | Weber, Patrick (1485) | Won 2-0 | +181510 |
| 5sealed | 566 | Bezusek, Pavel (1505) | Won 2-0 | +181528 |
| 6sealed | 431 | Freau, Cyrille (1545) | Lost 0-2 | -181510 |
| 7sealed | 421 | Belyov, Alexey (1675) | Lost 1-2 | -151495 |
| top | average opponent: 1568record: 3-4 | new rating: 1495 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 114 | Kozak, Jan (1500) | Won 2-0 | +181518 |
| 2sealed | 130 | De Sio, Jakub (1859) | Won 2-0 | +241542 |
| 3sealed | 16 | Overloop Van, Veerle (1482) | Lost 1-2 | -191523 |
| 4sealed | 166 | Lixl, David (1579) | Lost 0-2 | -171506 |
| 5sealed | 188 | Bozzo, Rodolfo (1530) | Lost 1-2 | -181488 |
| 6sealed | 237 | Odak, Hrvoje (1482) | Won 2-0 | +181506 |
| top | average opponent: 1572record: 3-3 | new rating: 1506 | ||