Polvivaara, Lauri
Current rating: 1635
Record: 10-4
| Grand Prix Helsinki 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 84 | Hammar, Sami (1500) | Won 2-1 | +181518 |
| 2sealed | 91 | Vallivaara, Visa (1518) | Won 2-0 | +181536 |
| 3sealed | 15 | Lehnert, Heiko (1542) | Won 2-0 | +181554 |
| 4sealed | 5 | Jantunen, Pauli (1564) | Won 2-1 | +181572 |
| 5sealed | 20 | Osterberg, Rickard (2017) | Won 2-1 | +261598 |
| 6sealed | 7 | Ruel, Antoine (2123) | Won 2-1 | +271625 |
| 7sealed | 2 | Ruel, Olivier (2118) | Won 2-1 | +261651 |
| 8sealed | 3 | Rissanen, Toni (1811) | Lost 1-2 | -151636 |
| 9rochester | 25 | Fiil, Tore (1574) | Lost 0-2 | -191617 |
| 10rochester | 8 | Nyfors, Mika (1648) | Won 2-0 | +181635 |
| 11rochester | 18 | Wiedenbein, Holger (1550) | Won 2-0 | +171652 |
| 12rochester | 20 | Tagunov, Denis (1679) | Lost 1-2 | -181634 |
| 13rochester | 15 | Wallin, Johnny (1623) | Lost 1-2 | -181616 |
| 14rochester | 10 | Schmidt, Steffen (1685) | Won 2-1 | +191635 |
| average opponent: 1711record: 10-4 | new rating: 1635 | |||