Rosen, Jacob
Current rating: 1520
Record: 4-3-1
| Grand Prix Philadelphia 2005 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 158 | Probasco, Andrew (1484) | Won 2-0 | +181518 |
| 2legacy | 12 | Majlaton, Alex (1556) | Won 2-0 | +181536 |
| 3legacy | 9 | Shiels, David (1622) | Won 2-1 | +201556 |
| 4legacy | 63 | Gaudard, Jason (1664) | Lost 1-2 | -161540 |
| 5legacy | 100 | Wells, Bryan (1468) | Won 2-1 | +171557 |
| 6legacy | 41 | Azzano, Douglas (1560) | Draw 1-1 | 01557 |
| 7legacy | 44 | Long, Noah (1505) | Lost 0-2 | -191538 |
| 8legacy | 71 | Schmaltz Tziritas, Mathew (1533) | Lost 0-2 | -181520 |
| average opponent: 1549record: 4-3-1 | new rating: 1520 | |||