Wrona, Grzegorz
Current rating: 1514
Record: 8-8
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 369 | Riman, Vit (1512) | Lost 1-2 | -171453 |
| 2sealed | 524 | Ksiazczyk, Maciej (1479) | Won 2-1 | +181471 |
| 3sealed | 397 | Pacholski, Maciej (1483) | Won 2-1 | +191490 |
| 4sealed | 140 | Vila, Ferran (1898) | Lost 0-2 | -111479 |
| 5sealed | 309 | Kiska, Vladislav (1534) | Won 2-0 | +191498 |
| 6sealed | 215 | Marquilly, Julien (1518) | Won 2-1 | +181516 |
| 7sealed | 302 | Walter, Paul (1479) | Won 2-1 | +171533 |
| 8sealed | 250 | Fryca, Krzysztof (1457) | Lost 0-2 | -191514 |
| average opponent: 1545record: 5-3 | new rating: 1514 | |||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 134 | Kolipinski, Adam (1449) | Lost 0-2 | -191481 |
| 2sealed | 424 | Alvarez Cobo, Fernando (1498) | Lost 0-2 | -181463 |
| 3sealed | 814 | Belin, Luc (1287) | Lost 1-2 | -211442 |
| 4sealed | 854 | Jagiello, Michal (1410) | Lost 1-2 | -181424 |
| 5sealed | 798 | Filz, Sebastian (1454) | Won 2-0 | +181442 |
| 6sealed | 702 | Ballesteros Olza, Mario (1756) | Won 2-1 | +241466 |
| 7sealed | 585 | Veneri, Dario (1694) | Lost 0-2 | -141452 |
| 8sealed | 516 | Kowalczyk, Artur (1478) | Won 2-0 | +181470 |
| average opponent: 1503record: 3-5 | new rating: 1470 | |||