Merdem, Knut-Erik
Current rating: 1542
Record: 25-22-1 (GP) / 5-8 (professional)
| Grand Prix Stockholm 2016 (EMN limited) | starting rating: 1563 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Von Kalkstein, Christian (1865) | Won 2-0 | +231586 |
| 2sealed | 162 | Thiesen, Anders (1517) | Lost 0-2 | -191567 |
| 3sealed | 457 | Duport, Olivier (1562) | Won 2-0 | +181585 |
| 4sealed | 180 | Pedan, Sergey (1491) | Won 2-0 | +161601 |
| 5sealed | 84 | Kalin, Felix (1456) | Lost 0-2 | -211580 |
| 6sealed | 301 | Sveinsson, Hjalti Rafn (1525) | Lost 1-2 | -191561 |
| 7sealed | 390 | Janmark, Carl (1491) | Lost 0-2 | -191542 |
| top | average opponent: 1558record: 3-4 | new rating: 1542 | ||
| Grand Prix Gothenburg 2013 (DGM limited) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 167 | Borg, Magnus (1480) | Won 2-0 | +181510 |
| 2sealed | 235 | Bank, Elias (1521) | Lost 1-2 | -181492 |
| 3sealed | 329 | Boman, Daniel (1499) | Won 2-0 | +181510 |
| 4sealed | 274 | Winkler, Eric (1566) | Won 2-1 | +191529 |
| 5sealed | 79 | Polgary, Mikael (1748) | Won 2-0 | +221551 |
| 6sealed | 69 | Almelund, Joakim (1835) | Won 2-0 | +231574 |
| 7sealed | 73 | Steinborn, Robin (1807) | Lost 0-2 | -131561 |
| 8sealed | 96 | Tuduri, Ricard (1704) | Won 2-0 | +201581 |
| 9sealed | 57 | Lundberg, Robin (1558) | Lost 1-2 | -181563 |
| top | average opponent: 1635record: 6-3 | new rating: 1563 | ||
| Grand Prix Gothenburg 2003 (MRD limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 39 | Lindqvist, Benjamin (1608) | Lost 0-2 | -161505 |
| 5sealed | 95 | Forsberg, Mikael 8860 (1542) | Lost 0-2 | -171488 |
| 6sealed | 93 | Holmberg, Fredrik (1553) | Won 2-1 | +191507 |
| 7sealed | 74 | Gardelin, Jonas (1700) | Lost 1-2 | -151492 |
| top | average opponent: 1601record: 1-3 | new rating: 1492 | ||
| Grand Prix Copenhagen 2002 (ONS rochester) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 26 | Nielsen, Kristoffer (1452) | Lost 0-2 | -191465 |
| 2sealed | 152 | Kmet, Adam (1537) | Won 2-0 | +201485 |
| 3sealed | 152 | Svendsen, Soren (1621) | Won 2-0 | +201505 |
| 4sealed | 91 | Jaki, Thomas (1608) | Lost 1-2 | -161489 |
| 5sealed | 168 | Stelmach, Wojciech (1365) | Won 2-0 | +161505 |
| 6sealed | 103 | Kvaloe, Tarjei (1486) | Won 2-1 | +171522 |
| 7sealed | 93 | Saddiq, Omar (1519) | Lost 1-2 | -181504 |
| 8sealed | 94 | Weinhold-Markus, Gerhard (1449) | Won 2-1 | +171521 |
| top | average opponent: 1504record: 5-3 | new rating: 1521 | ||
| Grand Prix Oslo 2001 (Invasion block) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 67 | Gorniak, Mariusz (1528) | Won 2-0 | +191476 |
| 2block | 61 | Weltzien, Asmund (1518) | Won 2-1 | +191495 |
| 3block | 16 | Thore, Fredrik (1536) | Won 2-0 | +191514 |
| 4block | 27 | Sandorf, Jan (1680) | Won 2-0 | +211535 |
| 5block | 7 | Angelin, Marcus (1737) | Lost 0-2 | -151520 |
| 6block | 26 | Vaisanen, Aarne (1504) | Lost 0-2 | -181502 |
| 7block | 52 | Lindblom, Alfred (1505) | Lost 0-2 | -181484 |
| top | average opponent: 1573record: 4-3 | new rating: 1484 | ||
| 2001 European Championship (mixed) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 134 | Matthews, James (1500) | Won 2-0 | +181520 |
| 2standard | 24 | Zink, Daniel (1600) | Lost 0-2 | -171503 |
| 3standard | 43 | Zupancic, Ladislav (1421) | Won 2-1 | +171520 |
| 4standard | 23 | Luhrs, Christian (1673) | Lost 0-2 | -151505 |
| 5standard | 49 | Koskimaki, Antti (1525) | Lost 1-2 | -181487 |
| 6standard | 97 | Parazzoli, Dario (1444) | Won 2-0 | +171504 |
| 7standard | 70 | Norin, Sergey (1555) | Lost 0-2 | -171487 |
| 8rochester | 24 | Myrvig, Peter (1605) | Lost 1-2 | -161471 |
| 9rochester | 31 | Grove, Harald (1486) | Lost 0-2 | -171454 |
| 10rochester | 97 | Lavs, Primoz (1480) | Won 2-0 | +181472 |
| 11rochester | 56 | Caetano, Ruben (1597) | Lost 1-2 | -161456 |
| 12rochester | 28 | Coghlan, David (1455) | Won 2-0 | +181474 |
| 13rochester | 81 | Lavs, Primoz (1497) | Lost 1-2 | -171457 |
| top | average opponent: 1526record: 5-8 | new rating: 1457 | ||
| Grand Prix Gothenburg 2001 (PLS limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 156 | Hellman, Jesper (1500) | Won 2-1 | +181500 |
| 2sealed | 2 | Lennartsson, Stefan (1519) | Lost 0-2 | -171483 |
| 3sealed | 95 | Westring, Johan (1499) | Won 2-0 | +181501 |
| 4sealed | 118 | Thorstenson, Frederick (1518) | Won 2-1 | +181519 |
| 5sealed | 76 | Lundstedt, Richard (1536) | Lost 1-2 | -181501 |
| 6sealed | 81 | Eriksson, Mikael (1517) | Won 2-1 | +191520 |
| 7sealed | 55 | Felix, Arvid (1536) | Lost 0-2 | -181502 |
| top | average opponent: 1518record: 4-3 | new rating: 1502 | ||
| Grand Prix Oslo 1999 (ULG sealed) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 76 | Bakke, Arne Gunnar (1500) | Lost 0-2 | -181482 |
| 2sealed | 123 | Gammersvik, Oystein (1482) | Won 2-0 | +181500 |
| 3sealed | 94 | Mortensen, Ole Chr. (1500) | Draw 1-1 | 01500 |
| 4sealed | 106 | Hansen, Boris (1519) | Lost 1-2 | -181482 |
| 5sealed | 129 | Gjedeboe, Finn (1482) | Won 2-0 | +181500 |
| 6sealed | 100 | Harkonen, Jarno (1475) | Lost 0-2 | -181482 |
| top | average opponent: 1493record: 2-3-1 | new rating: 1482 | ||