Stone, Tabitha
Current rating: 1430
| Grand Prix Houston 2010 (extended) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 67 | Chockla, Aaron M (1500) | Lost 1-2 | -171428 |
| 2extended | 205 | Kurzban, Fred (1482) | Lost 0-2 | -171411 |
| 3extended | 248 | Odom, Gabriel (1464) | Won 2-1 | +191430 |
| 4extended | 268 | King, Evan (1470) | Draw 1-1 | 01430 |
| top | average opponent: 1479record: 1-2-1 | new rating: 1430 | ||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 6 | Fausone, Anthony (1428) | Lost 0-2 | -191443 |
| 2extended | 309 | Mendez, Abraham (1482) | Won 2-0 | +191462 |
| 3extended | 299 | Burneh, Clint (1463) | Won 2-1 | +181480 |
| 4extended | 152 | Placone, Tristan (1500) | Lost 0-2 | -181462 |
| 5extended | 281 | Dorsey, Jon (1486) | Lost 0-2 | -171445 |
| top | average opponent: 1472record: 2-3 | new rating: 1445 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 139 | Phillips, Donald (1427) | Won 2-1 | +171517 |
| 2extended | 14 | Corzine, Tim E (1518) | Lost 0-2 | -181499 |
| 3extended | 271 | Duarte, Goncalo (1446) | Lost 0-0 | -191480 |
| 4extended | 284 | Seal, Robert (1482) | Lost 0-2 | -181462 |
| top | average opponent: 1468record: 1-3 | new rating: 1462 | ||