Karvonen, Joni
Current rating: 1464
Record: 1-3
| Grand Prix Helsinki 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 19 | Laine, Lauri (1482) | Lost 0-2 | -181482 |
| 2sealed | 166 | Leppanen, Simo (1481) | Lost 0-2 | -181464 |
| 3sealed | 186 | Lehto, Eetu (1464) | Won 2-1 | +181482 |
| 4sealed | 186 | Pihlajamaki, Timo (1483) | Lost 0-2 | -181464 |
| average opponent: 1478record: 1-3 | new rating: 1464 | |||