Lahteenmaki, Pekka
Current rating: 1557
Record: 16-14
| Grand Prix Bologna 2019 (legacy) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 9 | Rehmann, Daniel (1472) | Lost 0-2 | -191501 |
| 2legacy | 469 | Nissen, Daniel (1426) | Won 2-0 | +171518 |
| 3legacy | 540 | Ntafopoulos, Panagiotis (1477) | Lost 1-2 | -191499 |
| 4legacy | 592 | Blaso, Alex (1489) | Won 2-1 | +181517 |
| 5legacy | 378 | Gullo, Valerio (1505) | Won 2-1 | +181535 |
| 6legacy | 348 | Enberg, Staffan (1717) | Won 2-1 | +211556 |
| 7legacy | 215 | Karlsson, Rasmus (1605) | Lost 1-2 | -171539 |
| 8legacy | 260 | Rossi, Timothy (1517) | Won 2-0 | +181557 |
| top | average opponent: 1526record: 5-3 | new rating: 1557 | ||
| Grand Prix Stockholm 2018 (modern) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 31 | Gascon Clapes, Juan (1440) | Lost 1-2 | -181463 |
| 2modern | 497 | Rosenvik, Andreas (1485) | Lost 1-2 | -181445 |
| 3modern | 593 | Aagaard, Mikkel (1463) | Won 2-1 | +181463 |
| 4modern | 437 | Gaardbo, Mark (1619) | Won 2-1 | +211484 |
| 5modern | 412 | Manosalva, Rodrigo (1507) | Won 2-1 | +191503 |
| 6modern | 191 | Harezlak, Wiktor (1627) | Won 2-0 | +201523 |
| 7modern | 206 | Aaltonen, Janne (1380) | Won 2-0 | +151538 |
| 8modern | 78 | Lehtinen, Mikko (1535) | Lost 0-2 | -181520 |
| top | average opponent: 1507record: 5-3 | new rating: 1520 | ||
| Grand Prix Copenhagen 2017 (modern) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 301 | Glimberg, Tommy (1500) | Won 2-0 | +191504 |
| 2modern | 281 | Hoppe, Sebastian (1415) | Won 2-1 | +161520 |
| 3modern | 264 | Avedano, Andrea (1493) | Lost 1-2 | -181502 |
| 4modern | 455 | Norgaard, Lasse (1844) | Won 2-1 | +241526 |
| 5modern | 153 | Gurney, James (1648) | Lost 0-2 | -161510 |
| 6modern | 534 | Nobari, Poya (1829) | Won 2-1 | +231533 |
| 7modern | 356 | Weismann, Dominik (1655) | Lost 0-2 | -151518 |
| 8modern | 506 | Berglund, Cristian (1529) | Lost 1-2 | -181500 |
| 9modern | 444 | Stene, Even (1479) | Lost 0-2 | -191481 |
| top | average opponent: 1599record: 4-5 | new rating: 1481 | ||
| Grand Prix Prague 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 226 | Bamberger, Mark (1528) | Won 2-0 | +191519 |
| 3modern | 246 | Fuchs, Johannes (1534) | Lost 0-2 | -181501 |
| 4modern | 335 | Re, Alberto (1424) | Lost 1-2 | -201481 |
| 5modern | 461 | Ehrismann, Tobias (1709) | Lost 1-2 | -141467 |
| 6modern | 507 | Coen, Elia (1463) | Won 2-0 | +181485 |
| top | average opponent: 1531record: 2-3 | new rating: 1485 | ||