Mattila, Joel
Current rating: 1466
Record: 3-5
| Grand Prix Stockholm 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 178 | Bennacef, Ahmed (1456) | Won 2-0 | +171517 |
| 2modern | 146 | Lof, Fredrick (1543) | Lost 1-2 | -171500 |
| 3modern | 340 | Fjellstrom, Emil (1499) | Lost 1-2 | -181482 |
| 4modern | 523 | Cadoux, Leo (1646) | Lost 0-1 | -151467 |
| 5modern | 568 | Ripman, Theodore (1460) | Won 2-1 | +181485 |
| 6modern | 472 | Urvoy, Frederic (1438) | Won 2-0 | +171502 |
| 7modern | 318 | Askengren, Jonas (1445) | Lost 0-1 | -191483 |
| 8modern | 352 | Pasqui, Giulio (1583) | Lost 0-2 | -171466 |
| average opponent: 1509record: 3-5 | new rating: 1466 | |||