Heiska, Jaakko
Current rating: 1547
| Grand Prix Stockholm 2007 (FUT limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 110 | Hohenberg, Christoph (1464) | Won 2-0 | +171505 |
| 2sealed | 143 | Janse, August (1518) | Lost 1-2 | -171488 |
| 3sealed | 132 | Van Damme, Cliff (1414) | Won 1-0 | +161504 |
| 4sealed | 143 | Osterberg, Rickard (1929) | Won 2-1 | +251529 |
| 5sealed | 84 | Westerlund, Sebastian (1494) | Lost 0-2 | -181511 |
| 6sealed | 186 | Elfgren, Bertil (1530) | Lost 0-2 | -181493 |
| 7sealed | 174 | Skocek, Jean Philippe (1581) | Won 0-0 | +201513 |
| 8sealed | 135 | Melzer, Vladimir (1450) | Won 2-1 | +171530 |
| 9sealed | 98 | Shitikov, Oleg (1520) | Won 2-1 | +171547 |
| top | average opponent: 1545record: 6-3 | new rating: 1547 | ||
| Grand Prix Helsinki 2004 (COK limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 99 | Sovela, Jouni (1500) | Won 2-1 | +191464 |
| 2sealed | 22 | Andrejchikov, Denis (1518) | Won 2-0 | +191483 |
| 3sealed | 42 | Sellberg, Linus (1592) | Won 2-0 | +201503 |
| 4sealed | 33 | Kovelo, Ville (1501) | Won 2-1 | +181521 |
| 5sealed | 23 | Lehtinen, Markus (1575) | Lost 0-2 | -171504 |
| 6sealed | 33 | Siira, Erkki (1504) | Lost 0-2 | -181486 |
| 7sealed | 65 | Heinikangas, Niilo (1539) | Lost 1-2 | -171469 |
| 8sealed | 71 | Manninen, Lauri (1521) | Won 2-1 | +191488 |
| top | average opponent: 1531record: 5-3 | new rating: 1488 | ||
| Grand Prix Helsinki 2000 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 31 | Akinfiev, Alexander (1500) | Lost 1-2 | -181482 |
| 2sealed | 131 | Philippov, Sergey (1482) | Lost 1-2 | -181464 |
| 3sealed | 138 | Stenberg, Mikko (1396) | Lost 0-2 | -191445 |
| 4sealed | 165 | Nylund, Mikko (1446) | Won 2-0 | +181463 |
| 5sealed | 156 | Temnov, Serge (1464) | Won 2-0 | +181481 |
| 6sealed | 130 | Birkmanis, Andris (1482) | Lost 0-0 | -181463 |
| 7sealed | 121 | Vallin, Hannu (1464) | Lost 1-2 | -181445 |
| top | average opponent: 1462record: 2-5 | new rating: 1445 | ||