Koch, Patrick
Current rating: 1432
Record: 2-6-1
| Grand Prix Dortmund 2006 (GPT limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 116 | Fischer-Gundlach, Moritz (1500) | Lost 1-2 | -171447 |
| 2sealed | 161 | Jurk, Rainer (1541) | Won 1-0 | +191466 |
| 3sealed | 120 | Geipel, Thomas (1500) | Lost 1-2 | -171449 |
| 4sealed | 195 | Kefer, Pierre-francois (1482) | Lost 1-2 | -171432 |
| average opponent: 1506record: 1-3 | new rating: 1432 | |||
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 278 | Lenders, Nikki (1500) | Lost 0-2 | -181482 |
| 2extended | 399 | D'Hooge, Rob (1464) | Lost 1-2 | -181464 |
| 3extended | 398 | Bronsgeest, Bas (1462) | Lost 1-2 | -181446 |
| 4extended | 455 | Hoogendijk, Donald (1464) | Won 2-0 | +181464 |
| 5extended | 397 | Leroy, Simon (1464) | Draw 1-1 | 01464 |
| average opponent: 1471record: 1-3-1 | new rating: 1464 | |||