Sillanpaa, Tuomo
Current rating: 1467
Record: 3-5
| Grand Prix Helsinki 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 8 | Martikainen, Pekka (1473) | Lost 1-2 | -181482 |
| 2sealed | 146 | Oljakka, Jarno (1482) | Won 2-0 | +181500 |
| 3sealed | 117 | Bjork, Artturi (1683) | Lost 1-2 | -151485 |
| 4sealed | 184 | Ahonen, Kristian (1483) | Lost 0-2 | -181467 |
| 5sealed | 178 | Soljanne, Jouni (1464) | Won 2-0 | +181485 |
| 6sealed | 140 | Haapala Tapio, Jani (1485) | Lost 1-2 | -181467 |
| 7sealed | 136 | Petersell, Olgerd (1465) | Lost 0-2 | -181449 |
| 8sealed | 117 | Rahikkala, Joni Markus (1445) | Won 2-1 | +181467 |
| average opponent: 1498record: 3-5 | new rating: 1467 | |||