Grygorczyk, Marius
Current rating: 1431
Record: 5-9
| Grand Prix Philadelphia 2005 (legacy) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 81 | Wells, Bryan (1428) | Lost 0-2 | -191445 |
| 2legacy | 173 | Paladino, Frank (1482) | Won 2-1 | +191464 |
| 3legacy | 165 | Esposito, John (1501) | Lost 0-2 | -171447 |
| 4legacy | 216 | Lynch, Sean T (1452) | Lost 0-2 | -181429 |
| 5legacy | 196 | Homringhauser, Carl (1465) | Lost 0-2 | -181411 |
| 6legacy | 177 | Ross, Jarrod (1429) | Won 2-0 | +191430 |
| 7legacy | 139 | Forward, Stephen (1464) | Lost 0-2 | -181412 |
| 8legacy | 112 | Wilson, Daniel (1464) | Won 2-1 | +191431 |
| average opponent: 1461record: 3-5 | new rating: 1431 | |||
| Grand Prix Boston 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 178 | Raphael, Ronald (1500) | Won 2-0 | +181518 |
| 2extended | 52 | Chojnacki, Robert (1516) | Lost 0-2 | -181500 |
| 3extended | 189 | Ramos, Jose (1499) | Lost 0-2 | -181482 |
| 4extended | 287 | Snyder, Joseph (1482) | Lost 0-2 | -181464 |
| 5extended | 262 | Ellsworth, Stefan (1464) | Won 2-0 | +181482 |
| 6extended | 201 | Albergo, Patrick (1481) | Lost 0-2 | -181464 |
| average opponent: 1490record: 2-4 | new rating: 1464 | |||