Zak, Milan
Current rating: 1394
Record: 5-11
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 531 | Ebner, Florian (1519) | Won 2-0 | +201459 |
| 2sealed | 657 | Blaukowitsch, Bernd (1467) | Lost 0-2 | -181441 |
| 3sealed | 675 | Sulik, Pavel (1462) | Lost 1-2 | -181423 |
| 4sealed | 768 | Mikes, Tomas (1482) | Lost 0-2 | -171406 |
| 5sealed | 811 | Vojtech, Marek (1468) | Won 2-0 | +191425 |
| 6sealed | 739 | Toltsch, Nicolas (1466) | Lost 0-2 | -171408 |
| 7sealed | 735 | Kunz, Ernst (1482) | Won 2-0 | +201428 |
| 8sealed | 684 | Civrny, Pavel (1487) | Lost 1-2 | -171411 |
| 9sealed | 645 | Dylkowski, Damian (1464) | Lost 0-2 | -171394 |
| average opponent: 1478record: 3-6 | new rating: 1394 | |||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 29 | Vestergaard, Jakob (1425) | Lost 0-1 | -191481 |
| 2sealed | 352 | Gallus, Jan (1481) | Won 2-0 | +181499 |
| 3sealed | 308 | Dedek, Michal (1417) | Lost 1-2 | -201479 |
| 4sealed | 358 | Kratena, Ivo (1464) | Lost 0-2 | -181461 |
| 5sealed | 376 | Varak, Petr (1377) | Lost 0-2 | -201441 |
| 6sealed | 321 | Pannhorst, Lothar-Nils (1321) | Won 2-0 | +161457 |
| 7sealed | 243 | Panchartek, Zbysek (1464) | Lost 0-2 | -181439 |
| average opponent: 1421record: 2-5 | new rating: 1439 | |||