Koch, David
Current rating: 1541
Record: 7-5
| Grand Prix Heidelberg 2002 (TOR limited) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Fix, David (1500) | Won 2-0 | +171561 |
| 2sealed | 124 | Kammel, Alexander (1518) | Lost 1-2 | -191542 |
| 3sealed | 280 | Oehler, Martin (1499) | Won 2-0 | +171559 |
| 4sealed | 222 | Erlenbusch, Volker (1517) | Lost 1-2 | -181541 |
| average opponent: 1508record: 2-2 | new rating: 1541 | |||
| Grand Prix Vienna 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 111 | Radermacher, Till (1500) | Won 2-0 | +181518 |
| 2sealed | 49 | Purcha, Jean-Pierre (1642) | Lost 0-2 | -161502 |
| 3sealed | 230 | Eckenberger, Max (1496) | Lost 1-2 | -181484 |
| 4sealed | 249 | Savchuk, Rostyslav (1608) | Won 2-1 | +201504 |
| 5sealed | 175 | Gaspar, Attila (1510) | Won 2-0 | +181522 |
| 6sealed | 141 | Rubelj, Ivan (1585) | Won 2-0 | +201542 |
| 7sealed | 84 | Heumann, Stefan (1638) | Lost 0-2 | -171525 |
| 8sealed | 97 | Zielinski, Lukasz (1540) | Won 2-0 | +191544 |
| average opponent: 1565record: 5-3 | new rating: 1544 | |||