Majchrzak, Piotr
Current rating: 1636
Record: 33-25-4
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1679 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 372 | Repa, Tamas (1566) | Won 2-1 | +161695 |
| 3sealed | 89 | Saudino, Amedee (1679) | Won 2-1 | +171712 |
| 4sealed | 146 | Widmer, Dominik (1530) | Lost 0-2 | -211691 |
| 5sealed | 227 | Pedrakowski, Tomasz (1851) | Lost 1-2 | -151676 |
| 6sealed | 383 | Drozdowski, Mateusz (1637) | Lost 1-2 | -191657 |
| 7sealed | 484 | Szura, Robert (1474) | Lost 1-2 | -211636 |
| top | average opponent: 1623record: 2-4 | new rating: 1636 | ||
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1593 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 22 | Pekala, Konrad (1500) | Won 2-0 | +161609 |
| 2standard | 18 | Izard, Christophe (1497) | Lost 1-2 | -201589 |
| 3standard | 433 | Zimak, David (1429) | Won 2-1 | +151604 |
| 4standard | 197 | Boucetta, Joackim (1647) | Lost 1-2 | -171587 |
| 5standard | 440 | Lisovskiy, Yan (1457) | Won 2-1 | +161603 |
| 6standard | 283 | Schrenk, Adrian Johann (1584) | Won 2-1 | +171620 |
| 7standard | 222 | Weis, Sandra (1470) | Won 2-1 | +161636 |
| 8standard | 135 | Gorniak, Mariusz (1609) | Lost 0-2 | -191617 |
| 9standard | 154 | Torrego, Daniel (1565) | Won 2-1 | +171634 |
| 10standard | 185 | Wiktorzak, Piotr (1657) | Won 2-1 | +191653 |
| 11standard | 64 | Mitrokhin, Nikita (1807) | Won 2-1 | +201673 |
| 12standard | 73 | Velazquez, Jose Luis (1868) | Lost 1-2 | -141659 |
| 13standard | 104 | Tochacek, Daniel (1724) | Lost 0-2 | -171642 |
| 14standard | 128 | Wurzel, Steven (1564) | Won 2-0 | +171659 |
| 15standard | 112 | Viniczai, Tibor (1779) | Won 2-1 | +201679 |
| top | average opponent: 1610record: 10-5 | new rating: 1679 | ||
| Grand Prix Barcelona 2017 (AER standard) | starting rating: 1577 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 86 | Tirado Serrano, Eduard (1465) | Won 2-1 | +161593 |
| 2standard | 128 | Boonen, Lars (1404) | Draw 1-1 | -31590 |
| 3standard | 354 | Galende Gutierrez, Diego (1620) | Won 2-0 | +181608 |
| 4standard | 190 | Montesi, Marco (1712) | Lost 1-2 | -161592 |
| 5standard | 315 | Higgins, Gerard (1459) | Won 2-0 | +161608 |
| 6standard | 209 | Grancha Marin, Beatriz (1468) | Won 2-0 | +151623 |
| 7standard | 121 | Brambilla, Davide (2002) | Won 2-1 | +251648 |
| 8standard | 84 | Marco, David (1543) | Won 1-0 | +161664 |
| 9standard | 43 | Mango, Gennaro (1838) | Lost 1-2 | -151649 |
| 10standard | 95 | Pereira, Diogo (1581) | Draw 1-1 | -11648 |
| 11standard | 147 | De Castro Sanchez, Ivan (1724) | Won 2-1 | +191667 |
| 12standard | 100 | Gajewski, Michal (1757) | Lost 0-1 | -161651 |
| 13standard | 134 | Terziyski, Nikolay (1562) | Lost 0-2 | -201631 |
| 14standard | 152 | Cunha, Nelson (1574) | Lost 0-2 | -191612 |
| 15standard | 151 | Spaziani, Virgilio (1531) | Lost 0-1 | -191593 |
| top | average opponent: 1616record: 7-6-2 | new rating: 1593 | ||
| Grand Prix Warsaw 2016 (KLD standard) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 122 | Swierk, Pawel (1482) | Won 2-0 | +171564 |
| 2standard | 128 | Pullerits, Sten-Robert (1420) | Won 2-1 | +151579 |
| 3standard | 122 | Lawson, Fraser (1554) | Draw 1-1 | 01579 |
| 4standard | 156 | Kwasniewski, Artur (1480) | Won 2-0 | +161595 |
| 5standard | 84 | Hegni, Erlend Olav (1487) | Lost 0-2 | -201575 |
| 6standard | 183 | Sajjad, Usama (1722) | Won 2-0 | +211596 |
| 7standard | 111 | Szadurski, Mateusz (1600) | Won 2-1 | +181614 |
| 8standard | 59 | Distel, Piotr (1620) | Lost 1-2 | -181596 |
| 9standard | 116 | Lejeune, Olivier (1562) | Lost 1-2 | -191577 |
| top | average opponent: 1547record: 5-3-1 | new rating: 1577 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 318 | Males, Josip (1499) | Won 2-0 | +171588 |
| 2standard | 116 | Johansson, Linda (1500) | Won 2-1 | +161604 |
| 3standard | 309 | Velazquez, Jose Luis (1711) | Won 2-1 | +201624 |
| 4standard | 72 | Janeczek, Jakub (1658) | Lost 0-2 | -171607 |
| 5standard | 308 | Neumann, Alexander (1500) | Lost 0-2 | -201587 |
| 6standard | 278 | Walzer, Friedemann (1518) | Draw 1-1 | -21585 |
| 7standard | 333 | Mieczkowski, Jaroslaw (1504) | Lost 0-1 | -191566 |
| 8standard | 333 | Palmieri, Nicola (1525) | Lost 1-2 | -191547 |
| top | average opponent: 1552record: 3-4-1 | new rating: 1547 | ||
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 16 | Appleyard, Zakk (1500) | Won 2-1 | +181518 |
| 2standard | 55 | Jacobsen, Soren Knak (1565) | Won 2-1 | +191537 |
| 3standard | 91 | Angelin, Marcus (1925) | Lost 1-2 | -111526 |
| 4standard | 216 | Pullerits, Sten-Robert (1489) | Won 2-0 | +171543 |
| 5standard | 186 | Graba, Bartlomiej (1581) | Won 2-0 | +191562 |
| 6standard | 149 | Lysek, Andrzej (1703) | Lost 0-2 | -161546 |
| 7standard | 137 | Wescoe, Craig (2043) | Lost 0-1 | -91537 |
| 8standard | 240 | Modliszewski, Adrian (1425) | Won 2-0 | +161553 |
| 9standard | 146 | Malecki, Aleksander (1571) | Won 2-1 | +181571 |
| top | average opponent: 1645record: 6-3 | new rating: 1571 | ||