Grayson, Matthew
Current rating: 1482
Record: 3-4
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 235 | Kirk, Thomas (1500) | Lost 0-2 | -181482 |
| 2standard | 372 | Lester, Jarrod (1482) | Lost 1-2 | -181464 |
| 3standard | 472 | Skaggs, Tommy (1464) | Won 2-1 | +181482 |
| 4standard | 491 | Carroll, Bill M (1481) | Lost 0-2 | -181464 |
| 5standard | 475 | Crider, Greg J (1447) | Won 2-0 | +181482 |
| 6standard | 363 | Jamison, Lucas (1483) | Lost 0-2 | -181464 |
| 7standard | 333 | Micomonaco, Dominic (1465) | Won 2-0 | +181482 |
| average opponent: 1474record: 3-4 | new rating: 1482 | |||