Castren, Sakari
Current rating: 1465
Record: 27-30 (GP) / 7-8 (professional)
| Grand Prix Stockholm 2016 (EMN limited) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 6 | Petersen, Jannick (1536) | Won 2-1 | +191533 |
| 4sealed | 77 | Jonsson, Anton (1867) | Lost 0-2 | -121521 |
| 5sealed | 225 | Karlsson, Daniel (1508) | Lost 0-2 | -191502 |
| 6sealed | 235 | Pettersson, Goran (1519) | Lost 1-2 | -171485 |
| 7sealed | 370 | Molendijk, Gerard (1499) | Lost 1-2 | -181467 |
| 8sealed | 332 | Holmstedt, Rolf (1372) | Won 2-0 | +161483 |
| 9sealed | 281 | Kuffel, Moritz (1494) | Lost 1-2 | -181465 |
| top | average opponent: 1542record: 2-5 | new rating: 1465 | ||
| Grand Prix Stockholm 2014 (KTK standard) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 272 | Malmstrom, Jacob (1504) | Lost 0-2 | -191536 |
| 2standard | 350 | Kaasik, Mikk (1555) | Lost 0-2 | -181518 |
| 3standard | 472 | Brass, Peter (1466) | Lost 0-2 | -191499 |
| 4standard | 480 | Ekstrom, Roberth (1447) | Won 2-0 | +171516 |
| 5standard | 444 | Hedlund, Peter (1464) | Won 2-1 | +171533 |
| 6standard | 357 | Friberg, Daniel (1483) | Lost 1-2 | -191514 |
| top | average opponent: 1487record: 2-4 | new rating: 1514 | ||
| Pro Tour Dark Ascension (DKA standard) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 190 | Ronnkvist, Per (1639) | Won 2-1 | +191566 |
| 2standard | 70 | Lehner, Bernhard (1705) | Won 2-1 | +211587 |
| 3standard | 52 | Johnson, Jon (1481) | Won 2-1 | +161603 |
| 4standard | 10 | Chung, Jason (1763) | Lost 0-2 | -151588 |
| 5standard | 33 | Casadei, Luca (1563) | Lost 1-2 | -191569 |
| 6draft | 181 | Romao, Carlos (1695) | Lost 0-2 | -151554 |
| 7draft | 172 | Habert, Alexandre (1619) | Won 2-1 | +191573 |
| 8draft | 100 | Khodasevich, Egor (1686) | Won 2-1 | +201593 |
| 9draft | 14 | Mengucci, Andrea (1671) | Lost 1-2 | -171576 |
| 10draft | 9 | Hu, Haibing (1800) | Won 2-1 | +221598 |
| 11draft | 55 | Black, Samuel (1916) | Lost 0-2 | -121586 |
| 12standard | 63 | Coyle, Ryan (1508) | Lost 0-2 | -201566 |
| 13standard | 67 | Beasley, Orrin (1786) | Lost 1-2 | -141552 |
| 15standard | 65 | Pereira Junior, Pedro (1667) | Lost 0-2 | -161536 |
| 16standard | 71 | Duval, Arnaud (1543) | Won 2-1 | +191555 |
| top | average opponent: 1669record: 7-8 | new rating: 1555 | ||
| Grand Prix Milan 2011 (ISD limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 729 | Bertoni, Nicolas (1613) | Lost 0-2 | -171516 |
| 2sealed | 807 | Romoli, Federico (1483) | Won 2-1 | +181534 |
| 3sealed | 789 | Berger, Simon (1412) | Lost 0-2 | -201514 |
| 4sealed | 890 | Soresini, Roberto (1483) | Won 2-0 | +171531 |
| 5sealed | 739 | Munch, Thomas (1508) | Won 2-0 | +181549 |
| 6sealed | 662 | Danek, Petr (1551) | Lost 1-2 | -181531 |
| 7sealed | 704 | Volpone, Marco (1503) | Won 2-0 | +171548 |
| 8sealed | 649 | Palencias, Daniel (1515) | Won 2-0 | +181566 |
| 9sealed | 609 | Golob, Gasper (1511) | Lost 0-2 | -191547 |
| top | average opponent: 1509record: 5-4 | new rating: 1547 | ||
| Grand Prix Madrid 2010 (legacy) | starting rating: 1494 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 851 | Atienza Salva, Miguel (1500) | Won 2-0 | +181512 |
| 2legacy | 835 | Cuartiella, Albert (1519) | Lost 1-2 | -181494 |
| 3legacy | 881 | Ritzka, Simon (1708) | Won 2-1 | +221516 |
| 4legacy | 977 | Campanella, Nicolas (1521) | Won 2-1 | +181534 |
| 5legacy | 911 | Femenia Seco, Julio (1481) | Lost 0-2 | -191515 |
| 6legacy | 985 | Lopez, Ruben (1467) | Won 2-0 | +171532 |
| 7legacy | 872 | Pastor, Isaac (1623) | Won 2-1 | +201552 |
| 8legacy | 878 | Opatti, Matteo (1503) | Lost 1-2 | -191533 |
| top | average opponent: 1540record: 5-3 | new rating: 1533 | ||
| Grand Prix Copenhagen 2005 (extended) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 2 | Sollner, Christian (1535) | Won 2-0 | +191506 |
| 2extended | 9 | Balsby, Jens (1564) | Lost 1-2 | -171489 |
| 3extended | 76 | De Jong, Yannick (1479) | Won 2-1 | +181507 |
| 4extended | 78 | Simone, Luca (1403) | Won 2-0 | +161523 |
| 5extended | 38 | Leoni, Adriano (1525) | Lost 1-2 | -181505 |
| 6extended | 89 | Stein, Harald (1700) | Won 2-1 | +221527 |
| 7extended | 45 | Boll, Soren (1631) | Lost 1-2 | -161511 |
| 8extended | 69 | Kocsis, Gabor (1577) | Lost 0-2 | -171494 |
| top | average opponent: 1552record: 4-4 | new rating: 1494 | ||
| Grand Prix Helsinki 2004 (COK limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 110 | Knuutti, Jussi (1500) | Won 2-1 | +191481 |
| 2sealed | 83 | Sateri, Kim (1518) | Won 2-0 | +191500 |
| 3sealed | 38 | Mets, Martin (1516) | Lost 0-2 | -181482 |
| 4sealed | 89 | Facchini, Nullo (1555) | Won 2-0 | +191501 |
| 5sealed | 85 | Kettil, Mattias (1731) | Lost 0-2 | -141487 |
| 6sealed | 104 | Vallin, Hannu (1513) | Won 2-0 | +191506 |
| 7sealed | 56 | Myllymaki, Arttu (1482) | Lost 0-2 | -191487 |
| top | average opponent: 1545record: 4-3 | new rating: 1487 | ||
| Grand Prix Gothenburg 2003 (MRD limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 69 | Bloch, Felix (1500) | Won 2-1 | +181499 |
| 2sealed | 2 | Lundell, Fabian (1516) | Won 2-0 | +181517 |
| 3sealed | 52 | Chapman, Jonny (1508) | Lost 0-2 | -181499 |
| 4sealed | 81 | Kellmann, Nicolas (1489) | Lost 0-2 | -181481 |
| 5sealed | 147 | Nielsen, Kristoffer (1442) | Lost 1-2 | -191462 |
| top | average opponent: 1491record: 2-3 | new rating: 1462 | ||
| Grand Prix Helsinki 2000 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 81 | Lauri, Martti (1500) | Lost 1-2 | -181482 |
| 2sealed | 114 | Kivikoski, Mikko (1482) | Won 2-0 | +181500 |
| 3sealed | 115 | Birkmanis, Andris (1500) | Won 2-0 | +181518 |
| 4sealed | 90 | Wills, Scott (1439) | Lost 0-2 | -191499 |
| 5sealed | 109 | Puustinen, Eetu (1500) | Lost 0-2 | -181481 |
| 6sealed | 107 | Seppanen, Sami (1482) | Lost 0-0 | -181463 |
| 7sealed | 128 | Brandt, Mikael (1465) | Won 2-0 | +181481 |
| top | average opponent: 1481record: 3-4 | new rating: 1481 | ||