Brehovsky, Josef
Current rating: 1567
Record: 19-17-1
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 652 | Kral, Martin (1460) | Draw 1-1 | -11530 |
| 2legacy | 840 | Piipponen, Marko (1501) | Won 2-0 | +181548 |
| 3legacy | 731 | Lorenz, Maximilian (1518) | Won 2-0 | +171565 |
| 4legacy | 726 | Then, Freddy (1569) | Lost 0-2 | -181547 |
| 5legacy | 820 | Barbier, Guillaume (1678) | Won 2-0 | +211568 |
| 6legacy | 731 | Mund, Benjamin (1469) | Won 2-0 | +161584 |
| 7legacy | 686 | Kohler, Tim (1661) | Lost 1-2 | -171567 |
| top | average opponent: 1551record: 4-2-1 | new rating: 1567 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 641 | Gajewski, Michal (1554) | Lost 1-2 | -171516 |
| 2sealed | 665 | Beentjes, Jacco (1456) | Won 2-0 | +171533 |
| 3sealed | 671 | Skampa, Jan (1533) | Lost 1-2 | -181515 |
| 4sealed | 752 | Torma, Eva (1483) | Won 2-0 | +171532 |
| 5sealed | 686 | Stajic, Milos (1479) | Won 2-0 | +171549 |
| 6sealed | 609 | Herzig, Sven (1566) | Lost 1-2 | -181531 |
| top | average opponent: 1512record: 3-3 | new rating: 1531 | ||
| Grand Prix Madrid 2010 (legacy) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 1089 | Anders, Torsten (1580) | Won 2-0 | +191545 |
| 2legacy | 930 | Nunez Martin, Luis Alb (1518) | Won 2-1 | +171562 |
| 3legacy | 742 | Thomsen, Sascha (1669) | Lost 1-2 | -161546 |
| 4legacy | 878 | Al-Bacha, Wesimo (1935) | Lost 0-2 | -111535 |
| 5legacy | 1049 | Zuniga, Mario (1460) | Won 2-1 | +171552 |
| 6legacy | 939 | Valera Sansano, Gines (1534) | Lost 0-2 | -191533 |
| top | average opponent: 1616record: 3-3 | new rating: 1533 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 107 | Opata, Jan (1500) | Won 2-0 | +191467 |
| 2sealed | 87 | Larsen, Christoffer (1608) | Won 2-1 | +211488 |
| 3sealed | 58 | Paulmaier, Benjamin (1650) | Won 2-0 | +201508 |
| 4sealed | 350 | Hloch, Petr (1580) | Won 2-0 | +201528 |
| 5sealed | 11 | Dictus, Mark (1841) | Lost 1-2 | -131515 |
| 6sealed | 76 | Pokorny, Gernot (1530) | Won 1-0 | +191534 |
| 7sealed | 51 | Giusti, Emanuele (1803) | Lost 1-2 | -141520 |
| 8sealed | 57 | Sutor, Emanuel (1792) | Won 2-0 | +231543 |
| 9sealed | 30 | Melis, Bas (1582) | Lost 1-2 | -171526 |
| top | average opponent: 1654record: 6-3 | new rating: 1526 | ||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 341 | Prochazka, Jan (1500) | Lost 1-2 | -181482 |
| 2sealed | 249 | Marak, Filip (1501) | Lost 0-2 | -181464 |
| 3sealed | 400 | Lozak, Erik (1464) | Won 2-0 | +181482 |
| 4sealed | 291 | Rantala, Sonja (1477) | Won 2-1 | +181500 |
| 5sealed | 237 | Hloch, Petr (1499) | Won 2-0 | +181518 |
| 6sealed | 211 | Kos, Tomas 7452 (1520) | Lost 1-2 | -181500 |
| 7sealed | 222 | Smutek, Juergen (1492) | Lost 0-2 | -181482 |
| 8sealed | 198 | Diezel, Michael (1585) | Lost 1-2 | -161466 |
| 9sealed | 158 | Elekes, Daniel (1468) | Lost 0-1 | -181448 |
| top | average opponent: 1501record: 3-6 | new rating: 1448 | ||