Marczak, Tomasz
Current rating: 1479
Record: 8-10
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 126 | Rizhikov, Pavel (1452) | Won 2-1 | +181505 |
| 2standard | 146 | Verner, Lukas (1555) | Won 2-1 | +181523 |
| 3standard | 69 | Nowak, Maciej (1599) | Won 2-0 | +201543 |
| 4standard | 19 | Cabezas Munoz, Jose Manuel (1849) | Lost 0-2 | -131530 |
| 5standard | 267 | Kazanskis, Viktors (1551) | Lost 1-2 | -171513 |
| 6standard | 323 | Henry, Julien (1615) | Won 2-0 | +201533 |
| 7standard | 210 | Szczepanski, Pawel (1540) | Lost 1-2 | -181515 |
| 8standard | 208 | Varga, Tomas (1600) | Lost 1-2 | -171498 |
| 9standard | 248 | Dobrowolski, Rafal (1425) | Lost 1-2 | -191479 |
| average opponent: 1576record: 4-5 | new rating: 1479 | |||
| Grand Prix Prague 2013 (M14 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 314 | Sibul, Dejan (1683) | Lost 1-2 | -151485 |
| 2sealed | 434 | Fonteyne, Aron (1566) | Lost 1-2 | -161469 |
| 3sealed | 615 | Matousek, Kamil (1333) | Won 2-1 | +151484 |
| 4sealed | 593 | Stolc, Milos (1446) | Won 2-1 | +181502 |
| 5sealed | 452 | Kurz, Moriz (1504) | Lost 1-2 | -181484 |
| 6sealed | 550 | Ziegelheim, Jan (1533) | Won 2-1 | +191503 |
| 7sealed | 403 | Ceska, Pavel (1655) | Lost 1-2 | -161487 |
| 8sealed | 381 | Rohrer, Niki (1482) | Lost 1-2 | -181469 |
| 9sealed | 340 | Schelvis, Maurits (1468) | Won 2-0 | +181487 |
| average opponent: 1519record: 4-5 | new rating: 1487 | |||