Sierszen, Mark
Current rating: 1463
Record: 1-3
| Grand Prix Dortmund 2006 (GPT limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 58 | Blumel, Jan-eric (1446) | Lost 0-1 | -191481 |
| 2sealed | 208 | Luy, Theo (1482) | Lost 0-2 | -181463 |
| 3sealed | 217 | Peter, Manuel (1464) | Won 2-0 | +181481 |
| 4sealed | 167 | Frerichs, Jurgen (1465) | Lost 1-2 | -181463 |
| average opponent: 1464record: 1-3 | new rating: 1463 | |||