Gadberry, Brett
Current rating: 1469
Record: 3-5
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 129 | Lopate, Mike (1504) | Lost 0-2 | -181469 |
| record: 0-1 | new rating: 1469 | |||
| Grand Prix Seattle 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 104 | Sletteland, Nate (1500) | Won 2-0 | +181518 |
| 2extended | 86 | Weaver, Luke (1529) | Won 2-1 | +181536 |
| 3extended | 26 | Stockbrugger, Kurt (1518) | Won 2-1 | +181554 |
| 4extended | 43 | Nakamura, Shuhei (1908) | Lost 0-2 | -121542 |
| 5extended | 53 | Mandella, Mike (1504) | Lost 0-2 | -191523 |
| 6extended | 103 | Castanon, Juan (1517) | Lost 0-2 | -181505 |
| 7extended | 110 | Kirwin, Shane (1499) | Lost 1-2 | -181487 |
| average opponent: 1568record: 3-4 | new rating: 1487 | |||