Roub, Jan
Current rating: 1394
Record: 3-9-2
| Grand Prix Prague 2017 (AER limited) | starting rating: 1424 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 520 | Mohr, Lars (1534) | Lost 1-2 | -161408 |
| 2sealed | 655 | Krkavec, Michal (1490) | Lost 0-2 | -171391 |
| 3sealed | 869 | Rudnik, Jan (1593) | Lost 0-2 | -141377 |
| 4sealed | 948 | Tendl, Matthias (1362) | Draw 1-1 | 01377 |
| 5sealed | 890 | Hegedus, Daniel (1346) | Won 2-1 | +171394 |
| average opponent: 1465record: 1-3-1 | new rating: 1394 | |||
| Grand Prix Prague 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 142 | Luther, Rico (1500) | Lost 0-2 | -181482 |
| 2modern | 467 | Pokorny, Jiri J (1498) | Lost 0-2 | -181464 |
| 3modern | 639 | Moeken, Ed (1233) | Won 2-0 | +141478 |
| 4modern | 510 | Hauser, Valentin (1511) | Lost 0-2 | -171461 |
| 5modern | 606 | Hanus, Jioi (1399) | Draw 1-1 | -11460 |
| 6modern | 581 | Liebich, Igor (1473) | Lost 1-2 | -181442 |
| 7modern | 548 | Kloucek, Robert (1446) | Lost 1-2 | -181424 |
| 8modern | 492 | Stockmarr, Anton (1428) | Lost 1-2 | -181406 |
| 9modern | 426 | Mann, Rico (1398) | Won 2-1 | +181424 |
| average opponent: 1432record: 2-6-1 | new rating: 1424 | |||