Horttanainen, Petri
Current rating: 1630
| Grand Prix Prague 2018 (modern) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 315 | Kent, Declan (1432) | Won 2-0 | +151645 |
| 2modern | 176 | Smetana, Ondrej (1448) | Lost 1-2 | -221623 |
| 3modern | 669 | Bracks, Alexander (1498) | Lost 0-2 | -201603 |
| 4modern | 732 | Kukowski, Paul (1399) | Won 2-0 | +141617 |
| 5modern | 472 | Gohlke, Christian (1500) | Won 2-0 | +161633 |
| 6modern | 452 | Casamenti, Alessandro (1536) | Won 2-1 | +161649 |
| 7modern | 381 | Landgraf, Alexander (1572) | Lost 0-2 | -191630 |
| top | average opponent: 1483record: 4-3 | new rating: 1630 | ||
| Grand Prix Lyon 2018 (modern) | starting rating: 1607 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 358 | Barros, Cedric (1498) | Won 2-0 | +161623 |
| 2modern | 64 | Exposito Perez, Miquel (1521) | Won 2-0 | +161639 |
| 3modern | 144 | Jullien, Thibaud (1500) | Won 2-0 | +151654 |
| 4modern | 97 | Debuissy, Jeremy (1463) | Lost 1-2 | -211633 |
| 5modern | 299 | Bollmann, Laslo (1535) | Lost 1-2 | -201613 |
| 6modern | 342 | Madani, Niku (1572) | Won 2-0 | +171630 |
| 7modern | 368 | Koenigsmark, Dennis (1782) | Won 2-1 | +211651 |
| 8modern | 215 | Zaffaina, Nicolo (1502) | Lost 0-2 | -211630 |
| top | average opponent: 1547record: 5-3 | new rating: 1630 | ||
| Grand Prix Copenhagen 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 69 | Leahy, George (1633) | Won 2-1 | +201520 |
| 2modern | 78 | Deane, Peter (1575) | Won 2-0 | +191539 |
| 3modern | 51 | Axelsson, Daniel (1585) | Won 2-0 | +191558 |
| 4modern | 215 | Olsen, Kaare (1455) | Won 2-0 | +161574 |
| 5modern | 61 | Han, Hojae (1775) | Won 2-0 | +221596 |
| 6modern | 22 | Kratter, Filippo (1911) | Lost 0-2 | -121584 |
| 7modern | 49 | Glogowski, Piotr (1804) | Lost 0-2 | -141570 |
| 8modern | 126 | Dehulster, Wolf (1509) | Won 2-0 | +161586 |
| 9modern | 105 | Weismann, Dominik (1687) | Lost 1-2 | -161570 |
| 10modern | 392 | Meijers, Wietse (1565) | Won 2-0 | +181588 |
| 11modern | 428 | Serrao, Pedro (1691) | Won 2-1 | +201608 |
| 12modern | 344 | Bau, Katrine (1596) | Lost 0-2 | -181590 |
| 13modern | 399 | Novoa, Henry (1588) | Lost 0-2 | -181572 |
| 14modern | 386 | Muller, Lukas (1567) | Won 2-0 | +181590 |
| 15modern | 362 | Lombardy, Ray (1540) | Won 2-0 | +171607 |
| top | average opponent: 1632record: 10-5 | new rating: 1607 | ||