Pieniniemi, Matti
Current rating: 1430
Record: 3-7-2
| Grand Prix Copenhagen 2017 (modern) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 55 | Wild, Patrick (1786) | Lost 1-2 | -121462 |
| 2modern | 631 | Holm Nielsen, Kristoffer (1602) | Lost 0-2 | -161446 |
| 3modern | 872 | Kristoffersen, Johannes (1526) | Lost 0-2 | -161430 |
| average opponent: 1638record: 0-3 | new rating: 1430 | |||
| Grand Prix Copenhagen 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 418 | Larsen, Kasper (1425) | Lost 0-2 | -191481 |
| 2modern | 519 | Rogowska Borys, Dorota (1319) | Draw 1-1 | -31478 |
| 3modern | 560 | Holmstedt, Rolf (1347) | Lost 1-2 | -211457 |
| 4modern | 609 | Andreasen, Rene (1465) | Won 2-0 | +181475 |
| 5modern | 516 | Busk, Nicolaj (1480) | Lost 0-2 | -171458 |
| 6modern | 506 | Rasmussen, Luca Bilbo (1466) | Won 2-0 | +181476 |
| 7modern | 385 | Gans, Sabrina (1399) | Draw 1-1 | -21474 |
| 8modern | 347 | Musil, Jiri (1481) | Lost 1-2 | -181456 |
| 9modern | 302 | Riffert, Yiyang (1455) | Won 2-1 | +181474 |
| average opponent: 1426record: 3-4-2 | new rating: 1474 | |||