Mastny, Frantisek
Current rating: 1491
| Grand Prix Indianapolis 2012 (legacy) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 143 | Kaufman, Bryant (1500) | Lost 1-2 | -181511 |
| 2legacy | 360 | Burden, Andy (1467) | Lost 1-2 | -191492 |
| 3legacy | 469 | VanGilder, Marc (1469) | Won 2-1 | +171509 |
| 4legacy | 528 | Sowder, Christopher (1477) | Lost 1-2 | -181491 |
| top | average opponent: 1478record: 1-3 | new rating: 1491 | ||
| Grand Prix Lincoln 2012 (modern) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 91 | Hickman, Andrew (1500) | Won 2-0 | +181489 |
| 2modern | 51 | Arnoldy, Brian (1530) | Lost 0-2 | -171472 |
| 3modern | 231 | Lewis, Scott (1526) | Lost 1-2 | -171455 |
| 4modern | 269 | Stryczek, Brad (1531) | Won 2-0 | +191474 |
| 5modern | 250 | Hubbard, Evyn (1500) | Won 2-0 | +191493 |
| 6modern | 201 | Trautman, Nathan (1521) | Won 2-0 | +181511 |
| 7modern | 110 | Garles, Sam (1537) | Won 2-1 | +191530 |
| 8modern | 55 | Kring, David (1471) | Lost 1-2 | -191511 |
| 9modern | 115 | Mitchell, Branson (1544) | Won 2-1 | +181529 |
| top | average opponent: 1518record: 6-3 | new rating: 1529 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 100 | Kaufmann, David (1513) | Won 2-0 | +181518 |
| 2sealed | 85 | Horalek, Stepan (1518) | Lost 1-2 | -181500 |
| 3sealed | 280 | Saudek, Lucien (1592) | Won 2-1 | +201520 |
| 4sealed | 132 | Thoren, Jens (1805) | Lost 0-2 | -131507 |
| 5sealed | 214 | Ferenc, Turcsanyi (1497) | Lost 1-2 | -181489 |
| 6sealed | 249 | Ortega Santos, Jon Ander (1474) | Lost 0-2 | -181471 |
| top | average opponent: 1567record: 2-4 | new rating: 1471 | ||