Chupashko, Jake
Current rating: 1500
Record: 4-4
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 48 | Trice, Jason (1500) | Won 2-0 | +181518 |
| 2extended | 158 | Ignacio, Kenny (1490) | Lost 1-2 | -191499 |
| 3extended | 260 | LEHNER, ERIK (1500) | Won 2-0 | +191518 |
| 4extended | 251 | Naimoli, John (1583) | Lost 1-2 | -171501 |
| 5extended | 305 | Jargowsky, Bill (1448) | Won 2-1 | +171518 |
| 6extended | 195 | Portizo, Jason (1500) | Lost 0-2 | -191499 |
| 7extended | 218 | Walsh, Thaddeus (1507) | Won 2-0 | +191518 |
| 8extended | 167 | Boomer, Nick (1536) | Lost 1-2 | -181500 |
| average opponent: 1508record: 4-4 | new rating: 1500 | |||