Sobieski, Marek
Current rating: 1390
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1397 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 178 | Timmermans, Bas (1524) | Lost 0-2 | -151382 |
| 2standard | 324 | Plagge, Rainer (1516) | Won 2-1 | +201402 |
| 3standard | 419 | Schluepen, Lucas (1442) | Won 2-1 | +191421 |
| 4standard | 389 | Snellingen, Simen (1529) | Lost 0-2 | -161405 |
| 5standard | 467 | Mezhoud, Hakim (1653) | Lost 0-2 | -141391 |
| 6standard | 506 | Huben, Carlo (1486) | Lost 1-2 | -161375 |
| 7standard | 488 | Lhomme, Steeve (1146) | Lost 1-2 | -221353 |
| 8standard | 449 | Bosgra, Theo (1335) | Won 2-0 | +171370 |
| 9standard | 383 | Hammer, Benjamin (1432) | Won 2-0 | +201390 |
| top | average opponent: 1451record: 4-5 | new rating: 1390 | ||
| Grand Prix Warsaw 2016 (KLD standard) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 174 | Doropoulos, Marios-Isidoros (1716) | Lost 0-2 | -141433 |
| 2standard | 346 | Mede, Martin (1398) | Lost 0-2 | -181415 |
| 3standard | 521 | Konopko, Lukasz (1373) | Lost 0-2 | -191396 |
| 4standard | 542 | Szajna, Jakub (1331) | Won 2-0 | +171413 |
| 5standard | 502 | Breviglieri, Massimo (1437) | Lost 1-2 | -181395 |
| 6standard | 486 | Kozlowski, Lukasz (1446) | Won 2-0 | +191414 |
| 7standard | 429 | Panigada, Igor (1471) | Lost 1-2 | -171397 |
| top | average opponent: 1453record: 2-5 | new rating: 1397 | ||
| Grand Prix Prague 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 108 | Theijssen, Tom (1532) | Won 2-1 | +191519 |
| 2legacy | 220 | Zavadzkis, Domantas (1438) | Won 2-0 | +161535 |
| 3legacy | 160 | Wall, Oskar (1811) | Lost 1-2 | -131522 |
| 4legacy | 395 | Andersson, Andreas (1539) | Lost 0-2 | -181504 |
| 5legacy | 502 | De Decker, Tom (1633) | Lost 1-2 | -151489 |
| 6legacy | 489 | Szura, Robert (1354) | Lost 0-2 | -211468 |
| 7legacy | 547 | Patrascu, Michael (1472) | Won 2-0 | +181486 |
| 8legacy | 488 | Kesminaite, Aiste (1403) | Lost 1-2 | -191467 |
| 9legacy | 442 | Sidor, Mateusz (1352) | Lost 0-2 | -201447 |
| top | average opponent: 1504record: 3-6 | new rating: 1447 | ||