Sorensen, Robin G
Current rating: 1578
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1577 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 81 | Raymer, James (1500) | Won 2-0 | +161593 |
| 2standard | 58 | Wiitanen, Josh (1627) | Won 2-0 | +191612 |
| 3standard | 131 | Lapointe, Marc A (1528) | Lost 1-2 | -201592 |
| 4standard | 282 | Lee, Lauren (1518) | Won 2-1 | +171609 |
| 5standard | 198 | Christensen, Drew (1665) | Lost 1-2 | -171592 |
| 6standard | 328 | Juza, Martin (1977) | Lost 1-2 | -111581 |
| 7standard | 272 | Wicker, Shane (1499) | Won 2-1 | +161597 |
| 8standard | 179 | Surber, Christian J (1508) | Lost 0-2 | -191578 |
| top | average opponent: 1603record: 4-4 | new rating: 1578 | ||
| Grand Prix Vancouver 2008 (extended) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 67 | Rosas, Gabriel (1500) | Draw 1-1 | -21601 |
| 2extended | 98 | Tomasek, Riley R (1504) | Lost 1-2 | -201581 |
| 3extended | 139 | Chow, Jeff (1500) | Won 2-0 | +161597 |
| 4extended | 128 | Johnston, Vincent (1449) | Lost 0-2 | -201577 |
| top | average opponent: 1488record: 1-2-1 | new rating: 1577 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 91 | Nagai, Shou (1500) | Won 2-0 | +181518 |
| 2sealed | 23 | Kamei, Kazuhiko (1554) | Won 2-1 | +191537 |
| 3sealed | 6 | Kozakai, Yukio (1541) | Won 2-0 | +181555 |
| 4sealed | 38 | Kuniyoshi, Yasuhiro (1541) | Lost 0-2 | -191536 |
| 5sealed | 87 | Mutou, Kouhei (1632) | Won 2-0 | +201556 |
| 6sealed | 36 | Tanahashi, Masayasu (1574) | Won 2-1 | +191575 |
| 7sealed | 20 | Maki, Koichiro (1796) | Won 2-0 | +221597 |
| 8sealed | 10 | Kubota, Kenta (1712) | ID | 01597 |
| 9draft | 10 | Doi, Fumiaki (1560) | Won 2-1 | +171614 |
| 10draft | 10 | Takahashi, Junya (1656) | Lost 1-2 | -171597 |
| 11draft | 20 | Ootsuka, Koutarou (1752) | Won 2-0 | +201617 |
| 12draft | 19 | Katayama, Hidenori (1577) | Won 2-0 | +181635 |
| 13draft | 8 | Ibamoto, Masami (1819) | Lost 0-2 | -151620 |
| 14draft | 17 | Ishii, Taisuke (1649) | Lost 1-2 | -171603 |
| top | average opponent: 1633record: 9-4-1 | new rating: 1603 | ||