Maciazek, Mateusz
Current rating: 1426
Record: 4-8
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 379 | Capanda, Robert (1476) | Won 2-0 | +191480 |
| 2sealed | 191 | Majewski, Maciej (1499) | Lost 1-2 | -181462 |
| 3sealed | 554 | Starek, Jan (1500) | Lost 0-2 | -171445 |
| 4sealed | 733 | Fischer, Jakob (1403) | Lost 1-2 | -191426 |
| average opponent: 1469record: 1-3 | new rating: 1426 | |||
| Grand Prix Birmingham 2008 (Lorwyn block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 37 | Musberg, Mitja (1364) | Won 2-0 | +161516 |
| 2block | 124 | Jalkanen, Lauri (1516) | Won 2-0 | +181534 |
| 3block | 34 | Sherwani, Izian (1542) | Lost 1-2 | -181516 |
| 4block | 163 | Romero, Inigo (1496) | Won 2-1 | +171533 |
| 5block | 43 | Fletcher, Geoff (1562) | Lost 0-2 | -171516 |
| 6block | 135 | Dimakos, Michail (1502) | Lost 0-0 | -181498 |
| 7block | 152 | Ferguson, Scott John (1481) | Lost 0-2 | -191479 |
| 8block | 137 | Nelson, Craig (1481) | Lost 1-2 | -181461 |
| average opponent: 1493record: 3-5 | new rating: 1461 | |||