Koci, Martin
Current rating: 1441
Record: 3-6
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 206 | Marecek, Jan (1500) | Lost 0-1 | -181482 |
| 2sealed | 327 | Zbynek, Berecka (1431) | Won 2-1 | +171499 |
| 3sealed | 160 | Schnecker, Martin (1501) | Lost 1-2 | -181481 |
| 4sealed | 306 | Zuzanak, Vojtech (1482) | Lost 1-2 | -181463 |
| 5sealed | 357 | Vandas, Marek (1463) | Won 2-0 | +181481 |
| 6sealed | 296 | Szafranski, Karol (1447) | Lost 0-2 | -181463 |
| 7sealed | 269 | Holub, Michal (1464) | Lost 1-2 | -181445 |
| 8sealed | 218 | Hassler, Oliver (1223) | Won 2-1 | +141459 |
| 9sealed | 154 | Novak, Radek 2822 (1461) | Lost 0-2 | -181441 |
| average opponent: 1441record: 3-6 | new rating: 1441 | |||