Herr, Kou
Current rating: 1486
Record: 5-6
| Grand Prix Oakland 2010 (extended) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 219 | Garcia, Oliver (1516) | Lost 0-2 | -181524 |
| 2extended | 300 | Kim, Erick (1482) | Lost 1-2 | -191505 |
| 3extended | 284 | Phillips, Gary (1446) | Lost 0-2 | -191486 |
| average opponent: 1482record: 0-3 | new rating: 1486 | |||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 226 | Kwan, Michael (1534) | Won 2-0 | +191519 |
| 2extended | 89 | Reyes, Carl (1518) | Won 2-0 | +181537 |
| 3extended | 116 | Rosellini, Jason (1556) | Won 2-1 | +181555 |
| 4extended | 65 | Webb, Taylor (1674) | Lost 1-2 | -161539 |
| 5extended | 129 | Weitz, Benjamin (1540) | Lost 1-2 | -181521 |
| 6extended | 156 | Waggoner, Orie (1515) | Won 2-1 | +181539 |
| 7extended | 148 | Weeden, Eric (1556) | Won 2-0 | +181557 |
| 8extended | 108 | Siu, Brian (1704) | Lost 1-2 | -151542 |
| average opponent: 1575record: 5-3 | new rating: 1542 | |||