Gregorica, Petr
Current rating: 1511
Record: 9-8
| Grand Prix Prague 2014 (modern) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 38 | Horan, Joseph (1518) | Won 2-0 | +171573 |
| 3modern | 69 | Huttunen, Jani-petteri (1500) | Won 2-1 | +171590 |
| 4modern | 156 | Hejduk, Ladislav (1517) | Lost 0-2 | -201570 |
| 5modern | 180 | Karpio, Jakub (1519) | Lost 0-2 | -191551 |
| 6modern | 262 | Lhotka, Vaclav (1437) | Lost 0-2 | -201531 |
| 7modern | 406 | Zita, Antonin (1506) | Won 2-0 | +181549 |
| 8modern | 306 | Komarek, Tomas (1542) | Lost 0-2 | -181531 |
| 9modern | 307 | Neuneier, Maximilian (1444) | Lost 1-2 | -201511 |
| average opponent: 1498record: 3-5 | new rating: 1511 | |||
| Grand Prix Vienna 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 223 | Kohl, Nikolaus (1486) | Won 2-0 | +181518 |
| 2standard | 59 | Bockes, Florian (1487) | Won 2-1 | +171535 |
| 3standard | 614 | Lambrich, Benjamin (1564) | Lost 1-2 | -171518 |
| 4standard | 409 | Kiss, Adam (1466) | Lost 1-2 | -191499 |
| 5standard | 501 | Gasser, Jakob (1675) | Won 2-1 | +211520 |
| 6standard | 270 | Bojtar, Gyula (1547) | Won 2-0 | +181538 |
| 7standard | 317 | Esser, Florian (1506) | Lost 1-2 | -181520 |
| 8standard | 335 | Vanek, Vojtech (1503) | Won 2-1 | +181538 |
| 9standard | 275 | Knocinski, Przemek (1546) | Won 2-1 | +181556 |
| average opponent: 1531record: 6-3 | new rating: 1556 | |||