Ralston, Joseph
Current rating: 1448
Record: 4-7
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 449 | Diamant, Michael (1500) | Lost 1-2 | -181465 |
| 2sealed | 420 | Baldridge, Andrew (1482) | Lost 1-2 | -171448 |
| 3sealed | 509 | Rapier, Jeff (1464) | Won 2-1 | +181466 |
| 4sealed | 418 | Mcdonald, Spencer (1482) | Lost 0-2 | -181448 |
| average opponent: 1482record: 1-3 | new rating: 1448 | |||
| Grand Prix Oakland 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 210 | Bingham, Tyrel (1500) | Won 2-0 | +181518 |
| 2extended | 166 | McCormack, Conor (1518) | Lost 1-2 | -181500 |
| 3extended | 229 | Corwood, James (1446) | Lost 0-2 | -191481 |
| 4extended | 328 | Gordon, Elliot J (1482) | Lost 0-2 | -181463 |
| 5extended | 296 | Whitten, Blaine (1511) | Won 2-0 | +191482 |
| 6extended | 260 | Waller, Bud (1484) | Won 2-0 | +181500 |
| 7extended | 192 | Wegener, Jason M (1564) | Lost 0-2 | -171483 |
| average opponent: 1501record: 3-4 | new rating: 1483 | |||