Zachara, Stefan
Current rating: 1547
| Grand Prix Warsaw 2014 (JOU limited) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 266 | Bajek, Lukasz (1449) | Lost 1-2 | -201550 |
| 2sealed | 315 | Omelyanchik, Alexander (1520) | Won 2-1 | +171567 |
| 3sealed | 274 | Plaska, Michal (1485) | Won 2-1 | +171584 |
| 4sealed | 322 | Wielgorski, Daniel (1395) | Lost 1-2 | -221562 |
| 5sealed | 248 | Vanek, Jiri (1724) | Lost 1-2 | -151547 |
| top | average opponent: 1515record: 2-3 | new rating: 1547 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 7 | Kral, Martin (1552) | Won 2-1 | +201482 |
| 5sealed | 17 | Hauser, Matthias (1583) | Lost 0-2 | -161466 |
| 6sealed | 56 | Fyssas, Antonis (1626) | Won 2-0 | +211487 |
| 7sealed | 23 | Kopfli, Hugo (1656) | Won 2-1 | +211508 |
| 8sealed | 35 | Baumert, Martin (1643) | Lost 0-2 | -161492 |
| 9sealed | 43 | Hansen, Lasse Vestergaard (1619) | Won 2-1 | +201512 |
| 10draft | 17 | Pascoli, Mario (1950) | Won 2-0 | +261538 |
| 11draft | 70 | de Haan, Floris (1614) | Lost 0-2 | -171521 |
| 12draft | 32 | Calvetto, Marcello (1784) | Won 2-1 | +231544 |
| 13draft | 61 | Von Kalkstein, Christian (1656) | Lost 1-2 | -161528 |
| 14draft | 1 | Picciafuochi, Riccardo (1670) | Won 2-1 | +211549 |
| 15draft | 33 | Tuomi, Sami (1725) | Won 2-1 | +211570 |
| top | average opponent: 1673record: 8-4 | new rating: 1570 | ||
| Grand Prix Malmo 2006 (CSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 163 | Lindberg, Martin (1500) | Lost 0-2 | -181482 |
| 2sealed | 203 | Wrammerfors, Stefan (1462) | Lost 1-2 | -181464 |
| 3sealed | 219 | Sinval, Mattias (1463) | Lost 1-2 | -181446 |
| 4sealed | 240 | Wigstrand, Peter (1409) | Won 2-0 | +171463 |
| 5sealed | 196 | Lennartsson, Stefan (1454) | Won 1-0 | +181481 |
| 6sealed | 155 | Thor, Kim (1482) | Lost 0-2 | -181463 |
| 7sealed | 151 | Persson, Fredrik (1463) | Lost 0-2 | -181445 |
| 8sealed | 131 | Petersen, Frederik (1412) | Won 2-0 | +171462 |
| top | average opponent: 1456record: 3-5 | new rating: 1462 | ||