Janata, Ondrej
Current rating: 1514
| Grand Prix Prague 2014 (modern) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 216 | Klocke, Daniel (1574) | Lost 1-2 | -171474 |
| 2modern | 371 | Green, Oliver (1404) | Won 2-0 | +171491 |
| 3modern | 498 | Hribek, Michal (1590) | Lost 0-2 | -161475 |
| 4modern | 577 | Chatley, Amiy (1523) | Won 2-0 | +191494 |
| 5modern | 400 | Merino Bustos, Marcelo (1444) | Won 2-0 | +171511 |
| 6modern | 208 | Gorokhovskyy, Kostyantyn (1621) | Lost 1-2 | -161495 |
| 7modern | 447 | Hajek, Radim (1534) | Won 2-1 | +191514 |
| top | average opponent: 1527record: 4-3 | new rating: 1514 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 197 | Havel, Jan (1669) | Won 2-1 | +211501 |
| 2sealed | 28 | Maurer, Lukas (1645) | Lost 0-2 | -151486 |
| 3sealed | 123 | Tadic, Boby (1510) | Won 2-1 | +181504 |
| 4sealed | 173 | Schmaloer, Sebastian (1518) | Won 2-0 | +181522 |
| 5sealed | 114 | Vallin, Hannu (1767) | Lost 0-2 | -131509 |
| 6sealed | 162 | Ipsen, Kristian Kjolle (1519) | Won 2-0 | +181527 |
| 7sealed | 97 | Brade, Raphael (1584) | Lost 0-2 | -171510 |
| 8sealed | 101 | Wouters, Robin (1442) | Lost 0-2 | -191491 |
| top | average opponent: 1582record: 4-4 | new rating: 1491 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 679 | Lysek, Andrzej (1500) | Lost 1-2 | -181482 |
| 2sealed | 710 | Bittner, Regina (1481) | Won 2-0 | +181500 |
| 3sealed | 657 | Stipa, Martin (1500) | Won 2-0 | +181518 |
| 4sealed | 684 | Benes, Jan (1449) | Won 2-0 | +171535 |
| 5sealed | 664 | Brandt, Sebastian (1457) | Lost 1-2 | -201515 |
| 6sealed | 656 | Schreiber, David (1517) | Lost 0-2 | -181497 |
| 7sealed | 686 | Jaglo, Tomasz (1505) | Won 2-0 | +181515 |
| 8sealed | 647 | Secka, Radek (1522) | Lost 0-2 | -171498 |
| 9sealed | 620 | Patek, Zdenek (1505) | Lost 1-2 | -181480 |
| top | average opponent: 1493record: 4-5 | new rating: 1480 | ||