Parenica, Vaclav
Current rating: 1487
Record: 10-13-1
| Grand Prix Prague 2018 (modern) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 102 | Couceiro, Joao (1492) | Won 2-0 | +191490 |
| 2modern | 293 | Gross, Moritz (1700) | Won 2-1 | +211511 |
| 3modern | 36 | Ranieri, Giorgio (1452) | Won 2-1 | +171528 |
| 4modern | 20 | Vinther, Nicolai (1560) | Lost 1-2 | -171511 |
| 5modern | 403 | Pavon Rodriguez, Mariano (1363) | Lost 0-2 | -211490 |
| 6modern | 405 | Amrani, Omar (1581) | Won 2-0 | +201510 |
| 7modern | 382 | Flury, Julian Felix (1852) | Lost 0-2 | -121498 |
| 8modern | 312 | Penko, Matic (1909) | Lost 0-2 | -111487 |
| top | average opponent: 1613record: 4-4 | new rating: 1487 | ||
| Grand Prix Prague 2017 (AER limited) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 248 | Kordovan, Daniel (1581) | Won 2-1 | +201475 |
| 2sealed | 14 | Fortier, Remi (1948) | Lost 0-2 | -101465 |
| 3sealed | 477 | Melichar, Martin (1618) | Won 2-1 | +211486 |
| 4sealed | 474 | Grunwald, Robert (1517) | Lost 1-2 | -181468 |
| 5sealed | 709 | Woelfler, Walter (1514) | Lost 0-2 | -171451 |
| 6sealed | 758 | Ehrle, Philip (1555) | Won 2-0 | +201471 |
| top | average opponent: 1622record: 3-3 | new rating: 1471 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 131 | Ketzl, Tomas (1436) | Lost 1-2 | -191448 |
| 2standard | 383 | Hrdlicka, Ondrej (1511) | Draw 1-1 | +21450 |
| 3standard | 626 | Hauser, Matthias (1715) | Won 2-0 | +221472 |
| 4standard | 481 | Siegl, Toni (1500) | Lost 1-2 | -171455 |
| top | average opponent: 1540record: 1-2-1 | new rating: 1455 | ||
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 140 | Goertzen, Dominik (1580) | Lost 1-2 | -171483 |
| 2standard | 270 | Mihulowicz, Maciej (1482) | Won 2-0 | +181501 |
| 3standard | 416 | Mauguin, Matthieu (1612) | Lost 1-2 | -161485 |
| 4standard | 513 | Grygierczyk, Mariusz (1480) | Won 2-0 | +181503 |
| 5standard | 398 | Steinkamp, Paul (1518) | Lost 1-2 | -171486 |
| 6standard | 455 | Szczypka, Adam (1451) | Lost 0-2 | -191467 |
| top | average opponent: 1521record: 2-4 | new rating: 1467 | ||