Janovsky, David
Current rating: 1259
Record: 4-20
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1296 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 123 | Cooper, Scott 931 (1500) | Lost 0-2 | -141282 |
| 2block | 425 | Smith, Tristan (1501) | Lost 1-2 | -141268 |
| 3block | 586 | Bailey, Joshua [ENG] (1415) | Won 2-0 | +201288 |
| 4block | 591 | Krempel, Nick (1483) | Lost 1-2 | -141274 |
| 5block | 582 | Sailes, Mark (1462) | Lost 0-2 | -151259 |
| top | average opponent: 1472record: 1-4 | new rating: 1259 | ||
| Grand Prix Prague 2014 (modern) | starting rating: 1367 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 330 | Peters, Bas (1500) | Lost 1-2 | -151352 |
| 2modern | 408 | Martino, Valerio (1704) | Lost 0-2 | -121340 |
| 3modern | 645 | Ortloff, Sebastian (1448) | Lost 0-2 | -161324 |
| 4modern | 683 | Weber, Niels (1424) | Lost 1-2 | -161308 |
| 5modern | 653 | Moucka, Martin (1433) | Lost 0-2 | -161292 |
| 6modern | 613 | Fontan, Frantisek (1410) | Won 2-0 | +201312 |
| 7modern | 560 | Penniger, Lukas (1427) | Lost 0-2 | -161296 |
| top | average opponent: 1478record: 1-6 | new rating: 1296 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Samal, Krystof (1465) | Won 2-0 | +191428 |
| 2sealed | 2 | Stanek, Ondrej (1541) | Lost 0-2 | -161412 |
| 3sealed | 120 | Bakos, Peter (1506) | Won 2-1 | +201432 |
| 4sealed | 107 | Kazanskis, Viktors (1499) | Lost 0-2 | -171415 |
| 5sealed | 217 | Horalek, Stepan (1503) | Lost 1-2 | -161399 |
| 6sealed | 186 | Fukala, Dalibor (1567) | Lost 0-2 | -151384 |
| 7sealed | 164 | Petak, Tamas (1469) | Lost 1-2 | -171367 |
| top | average opponent: 1507record: 2-5 | new rating: 1367 | ||
| Grand Prix Krakow 2007 (LRW standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 544 | Wijnen, Marc (1452) | Lost 0-2 | -191481 |
| 2standard | 654 | Perrache, David (1482) | Lost 0-2 | -181463 |
| 3standard | 666 | Olewinski, Pawel (1463) | Lost 1-2 | -181445 |
| 4standard | 701 | Hrbacek, Jakub (1444) | Lost 1-2 | -181427 |
| 5standard | 699 | Dadel, Kamil (1430) | Lost 1-2 | -181409 |
| top | average opponent: 1454record: 0-5 | new rating: 1409 | ||