Valderas, Jose
Current rating: 1444
Record: 3-6
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 245 | Joffrion, Corey (1508) | Lost 1-2 | -181482 |
| 2standard | 386 | Centrel, Chris (1483) | Won 2-1 | +181500 |
| 3standard | 270 | Erickson, Danny (1467) | Lost 1-2 | -181482 |
| 4standard | 391 | Hite, Nicholas (1483) | Won 2-0 | +181500 |
| 5standard | 320 | Tingey, Vince (1537) | Won 2-1 | +181518 |
| 6standard | 293 | Sturgeon, Sam G (1467) | Lost 0-2 | -191499 |
| 7standard | 287 | Rubinstein, Aaron (1438) | Lost 1-2 | -191480 |
| 8standard | 232 | Pearcy, Riley (1465) | Lost 0-2 | -181462 |
| 9standard | 191 | Russell, Carol A (1480) | Lost 0-0 | -181444 |
| average opponent: 1481record: 3-6 | new rating: 1444 | |||