Perkowski, Jeremy J
Current rating: 1549
Record: 5-3
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 22 | Stocks, Jonathan (1725) | Won 2-1 | +221522 |
| 2extended | 19 | Poblano, Ramon J (1518) | Won 2-0 | +181540 |
| 3extended | 117 | Hernandez, Daniel-Jason (1536) | Lost 1-2 | -181522 |
| 4extended | 242 | Gonzales, Gilbert (1520) | Lost 0-2 | -181504 |
| 5extended | 225 | Fausone, Anthony (1433) | Won 2-1 | +171521 |
| 6extended | 205 | Bunsongsikul, Ped (1642) | Won 2-0 | +201541 |
| 7extended | 167 | Lundquist, Ben (1855) | Won 2-1 | +231564 |
| 8extended | 77 | Fine, Marshall (1686) | Lost 0-2 | -151549 |
| average opponent: 1614record: 5-3 | new rating: 1549 | |||