Laski, Piotr
Current rating: 1516
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 454 | Kirillov, Mikhail (1500) | Won 2-0 | +181508 |
| 2sealed | 443 | Varady, Balazs (1533) | Won 2-0 | +181526 |
| 3sealed | 197 | Pestov, Evgeny (1689) | Lost 1-2 | -151511 |
| 4sealed | 261 | Szurgot, Szymon (1518) | Won 2-0 | +181529 |
| 5sealed | 170 | Ducenko, Lev (1642) | Won 2-0 | +201549 |
| 6sealed | 42 | Vainio, Aki (1450) | Lost 1-2 | -191530 |
| 7sealed | 253 | Heigerer, Stefan (1759) | Lost 0-2 | -141516 |
| top | average opponent: 1584record: 4-3 | new rating: 1516 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 111 | Bogner, Manuel (1500) | Lost 1-2 | -181464 |
| 2standard | 441 | Essl, Bernhard (1464) | Lost 0-2 | -181446 |
| 3standard | 702 | Bluchet, Damien (1465) | Won 2-0 | +181464 |
| 4standard | 542 | Schaller, Sebastian (1676) | Won 2-1 | +221486 |
| 5standard | 452 | Ehrle, Philip (1682) | Won 2-0 | +221508 |
| 6standard | 297 | Svensson, Fredrik (1507) | Lost 0-2 | -181490 |
| top | average opponent: 1549record: 3-3 | new rating: 1490 | ||
| Grand Prix Krakow 2007 (LRW standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 622 | Dudek, Lukasz (1500) | Won 2-1 | +181518 |
| 2standard | 584 | Costa, Joel David (1518) | Lost 1-2 | -181500 |
| 3standard | 629 | Markovic, Ivan (1484) | Lost 0-2 | -181482 |
| 4standard | 680 | Bathe-Taylor, Mark R (1483) | Lost 1-2 | -181464 |
| 5standard | 695 | Drabik, Iwo (1466) | Lost 1-2 | -181446 |
| 6standard | 677 | Wolak, Jerzy (1445) | Won 2-1 | +181464 |
| 7standard | 642 | Trapl, Tomas (1448) | Won 2-1 | +171481 |
| 8standard | 615 | Gorczowski, Michal (1485) | Won 2-0 | +191500 |
| 9standard | 590 | Dowhan, Pawel (1503) | Lost 1-2 | -181482 |
| top | average opponent: 1481record: 4-5 | new rating: 1482 | ||