Hapiak, Viktor
Current rating: 1548
| Grand Prix Lyon 2019 (ELD standard) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 170 | Chatelain, Benjamin (1500) | Lost 0-2 | -181467 |
| 2standard | 279 | Nevers, Yannis (1590) | Won 2-0 | +201487 |
| 3standard | 374 | Chierzi, Fabrizio (1428) | Won 2-0 | +171504 |
| 4standard | 222 | Zivec, Josef (1766) | Won 2-1 | +231527 |
| 5standard | 115 | Martos, Antonio (1756) | Draw 1-1 | +41531 |
| 6standard | 144 | Follin, Pierre-Henri (1535) | Won 2-0 | +181549 |
| 7standard | 79 | Nunez, Anthony (1424) | Lost 0-2 | -201529 |
| 8standard | 139 | Wiart, Mathieu (1572) | Won 2-0 | +191548 |
| top | average opponent: 1571record: 5-2-1 | new rating: 1548 | ||
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 508 | Maximcev, Maxim (1500) | Lost 1-2 | -181501 |
| 2sealed | 551 | Papierz, Mateusz (1483) | Lost 0-2 | -181483 |
| 3sealed | 473 | Nykstelis, Rytis (1471) | Won 2-0 | +171500 |
| 4sealed | 349 | Pacholski, Maciej (1465) | Won 2-1 | +181518 |
| 5sealed | 331 | Matsson, Edvin (1531) | Won 2-0 | +181536 |
| 6sealed | 203 | Sloo, Felix (1728) | Lost 1-2 | -151521 |
| 7sealed | 348 | Javid Bressot, Maxime (1463) | Lost 1-2 | -191502 |
| 8sealed | 385 | Disenborg, Johan (1530) | Lost 1-2 | -171485 |
| top | average opponent: 1521record: 3-5 | new rating: 1485 | ||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 153 | Hess, Markus (1548) | Draw 1-1 | +11501 |
| 2sealed | 406 | Schulze, Daniel (1502) | Draw 1-1 | 01501 |
| 3sealed | 758 | Zini, Matteo (1501) | Draw 1-1 | 01501 |
| 4sealed | 716 | Sakalik, Jan (1589) | Won 2-1 | +201521 |
| 5sealed | 671 | Kobel, Louis (1502) | Lost 0-2 | -191502 |
| 6sealed | 599 | Chatziargiriou, Argyrios (1484) | Lost 0-2 | -181484 |
| 7sealed | 587 | Mihaly, Marton Rafael (1474) | Won 2-0 | +181502 |
| 8sealed | 468 | Gesche, Etienne (1486) | Won 2-0 | +171519 |
| top | average opponent: 1511record: 3-2-3 | new rating: 1519 | ||