Holub, Michal
Current rating: 1483
Record: 7-8
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 198 | Balcar, Jiri (1500) | Lost 1-2 | -181482 |
| 2sealed | 223 | Wroblewski, Konrad (1482) | Won 2-0 | +181500 |
| 3sealed | 177 | Sindelar, Petr (1500) | Lost 0-2 | -181482 |
| 4sealed | 288 | Kubus, Petr (1538) | Lost 1-2 | -171465 |
| 5sealed | 295 | Majer, Filip (1464) | Won 2-1 | +181483 |
| 6sealed | 255 | Popescu, Tiberiu (1485) | Won 2-0 | +181501 |
| 7sealed | 182 | Richter, Tomas (1506) | Lost 1-2 | -181483 |
| average opponent: 1496record: 3-4 | new rating: 1483 | |||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 160 | Lamper, Jan (1471) | Lost 1-2 | -191481 |
| 2sealed | 273 | Becker, Franz (1484) | Won 2-0 | +191500 |
| 3sealed | 234 | Tittel, Rainer (1499) | Won 2-0 | +181518 |
| 4sealed | 209 | Tan, Ronnie (1495) | Lost 0-2 | -191499 |
| 5sealed | 229 | Davydova, Zhanna (1563) | Lost 1-2 | -171482 |
| 6sealed | 259 | Schafer, Frank (1479) | Lost 1-2 | -181464 |
| 7sealed | 269 | Koci, Martin (1463) | Won 2-1 | +181482 |
| 8sealed | 189 | Picha, Stepan (1479) | Won 2-0 | +181500 |
| average opponent: 1492record: 4-4 | new rating: 1500 | |||