Hyrsky, Antti
Current rating: 1535
Record: 5-3
| Grand Prix Helsinki 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 156 | Raukomaa, Joonas (1501) | Lost 0-2 | -181482 |
| 2sealed | 175 | Salo, Miika (1482) | Won 2-0 | +181500 |
| 3sealed | 90 | Heikinniemi, Tommi (1521) | Lost 1-2 | -181482 |
| 4sealed | 182 | Loimula, Mikko (1482) | Won 2-1 | +181500 |
| 5sealed | 125 | Heiramo, Petri (1516) | Won 2-0 | +191519 |
| 6sealed | 69 | Kiukkonen, Markus (1463) | Lost 0-2 | -191500 |
| 7sealed | 106 | Makarov, Denis (1484) | Won 2-1 | +171517 |
| 8sealed | 82 | Haapala Tapio, Jani (1521) | Won 1-0 | +181535 |
| average opponent: 1496record: 5-3 | new rating: 1535 | |||