Mederly, Martin
Current rating: 1420
Record: 11-17-3
| Grand Prix Prague 2018 (modern) | starting rating: 1380 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 390 | Van Der Puil, Yves (1540) | Draw 1-1 | +31383 |
| 2modern | 460 | Czernik, Ben (1502) | Won 2-1 | +201403 |
| 3modern | 436 | Rehounek, Lubos (1451) | Won 2-1 | +191422 |
| 4modern | 233 | Pecjak, Patrick (1536) | Won 2-1 | +201442 |
| 5modern | 117 | Kapera, Krzysztof (1677) | Draw 1-1 | +41446 |
| 6modern | 263 | Covoni, Niccolo (1637) | Lost 0-2 | -151431 |
| 7modern | 422 | Sommer, Jan (1533) | Draw 1-1 | +21433 |
| 8modern | 375 | Ritter, Simon (1694) | Lost 0-2 | -131420 |
| top | average opponent: 1571record: 3-2-3 | new rating: 1420 | ||
| Grand Prix Prague 2013 (M14 limited) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 396 | Eilertsen, Mark (1500) | Won 2-0 | +201448 |
| 2sealed | 248 | Barkowski, Malte (1500) | Lost 0-2 | -171431 |
| 3sealed | 482 | Snellings, Yannick (1487) | Lost 0-2 | -171414 |
| 4sealed | 563 | Hanfstengel, Emil (1483) | Lost 0-2 | -171397 |
| 5sealed | 642 | Eschweiler, Lars (1445) | Lost 0-2 | -171380 |
| top | average opponent: 1483record: 1-4 | new rating: 1380 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 122 | Caffini, Alessandro (1449) | Lost 1-2 | -181463 |
| 2sealed | 245 | Zakouril, Jakub (1482) | Lost 0-2 | -181445 |
| 3sealed | 318 | Canaletto, Giacomo (1464) | Lost 0-2 | -181427 |
| 4sealed | 356 | Majer, Filip (1447) | Lost 1-2 | -171410 |
| 5sealed | 325 | Stojan, Vaclav (1427) | Won 2-0 | +181428 |
| 6sealed | 287 | Weisskopf, Marek (1445) | Won 2-1 | +181446 |
| 7sealed | 236 | Rybar, Stepan (1468) | Won 2-0 | +191465 |
| 8sealed | 159 | Kovacs, Szilveszter (1434) | Lost 0-2 | -191446 |
| 9sealed | 132 | Jurek, Jiri (1465) | Lost 0-2 | -181428 |
| top | average opponent: 1453record: 3-6 | new rating: 1428 | ||
| Grand Prix Vienna 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 2 | Kaltsas, Kostas (1552) | Won 2-1 | +191519 |
| 2extended | 33 | Elez, Goran (1529) | Lost 1-2 | -181501 |
| 3extended | 160 | Horvath, Tamas 2 (1500) | Won 2-1 | +181519 |
| 4extended | 121 | Gorski, Michal (1506) | Lost 0-2 | -181501 |
| 5extended | 143 | Eckschlager, Markus (1503) | Lost 1-2 | -181483 |
| 6extended | 177 | Kjellberg, Magnus (1453) | Lost 1-2 | -191464 |
| 7extended | 179 | Perez, Pedro P (1465) | Lost 1-2 | -181446 |
| 8extended | 156 | Gorka, Sebastian (1449) | Won 2-1 | +181464 |
| 9extended | 126 | Gehring, Peter (1394) | Won 2-0 | +171481 |
| top | average opponent: 1483record: 4-5 | new rating: 1481 | ||