Karcher, David S
Current rating: 1466
Record: 2-4-1
| Grand Prix Hanover 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 495 | Pfahl, Sebastian (1500) | Draw 0-0 | 01500 |
| 2extended | 525 | Abed, Arasch (1466) | Lost 0-2 | -191481 |
| 3extended | 573 | Kopp, Andre (1482) | Lost 1-2 | -181463 |
| 4extended | 615 | Emmer, Steven (1464) | Won 1-0 | +181481 |
| 5extended | 579 | Rehfeldt, Stefan (1482) | Won 2-0 | +181499 |
| 6extended | 540 | Pokorny, Gernot (1509) | Lost 0-2 | -171482 |
| 7extended | 543 | Morgenstern, Frank (1606) | Lost 1-2 | -161466 |
| average opponent: 1501record: 2-4-1 | new rating: 1466 | |||