Kumorek, Marcin
Current rating: 1615
Record: 26-20-2 (GP) / 1-2 (professional)
| Grand Prix Vienna 2001 (ODY limited) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 2 | Visciano, Raffaele (1553) | Lost 0-2 | -191589 |
| 3sealed | 127 | Vogelheim, Thorsten (1501) | Lost 1-2 | -201569 |
| 4sealed | 219 | Hendricks, Daniel (1482) | Won 2-0 | +171586 |
| 5sealed | 163 | Figura, Christian (1500) | Lost 1-2 | -201566 |
| 6sealed | 194 | Glavnik, Luka (1482) | Won 2-1 | +171583 |
| 7sealed | 141 | Nagy, Zoltan (1438) | Won 2-0 | +151598 |
| 8sealed | 110 | Lauter, Michael (1533) | Won 2-1 | +171615 |
| top | average opponent: 1498record: 4-3 | new rating: 1615 | ||
| Grand Prix Warsaw 2001 (Invasion block) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 94 | Czerwinska, Danuta (1500) | Lost 0-2 | -181517 |
| 2block | 161 | Jung, Pavel (1482) | Won 2-0 | +171534 |
| 3block | 111 | Van Tuan, Viet (1500) | Won 2-1 | +171551 |
| 4block | 55 | Karlsson, Mats (1585) | Draw 1-1 | +11552 |
| 5block | 76 | Rozynek, Pawel (1520) | Won 2-0 | +171569 |
| 6block | 46 | Worner, Jurgen (1535) | Won 2-1 | +181587 |
| 7block | 27 | Marek, Libor (1609) | Won 2-1 | +181605 |
| 8block | 18 | Zidek, Arnost (1524) | Won 2-1 | +171622 |
| 9block | 10 | Jankowski, Szymon (1533) | Won 2-1 | +161638 |
| 10block | 5 | Grond, Sebastian (1679) | Lost 1-2 | -171621 |
| 11block | 14 | Karlsson, Morgan (1749) | Lost 1-2 | -161605 |
| 12block | 18 | Delere, Andre (1771) | Lost 0-2 | -151590 |
| 13block | 24 | Durham, Michael (1626) | Won 2-1 | +191609 |
| 14block | 20 | Pache, Roland (1571) | Draw 1-1 | -11608 |
| top | average opponent: 1585record: 8-4-2 | new rating: 1608 | ||
| Grand Prix Prague 2001 (PLS limited) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 122 | Leichtfried, Peter (1500) | Won 2-0 | +191476 |
| 2sealed | 14 | Popelka, Petr (1518) | Won 2-0 | +191495 |
| 3sealed | 24 | Krupicki, Krzysztof (1536) | Won 2-0 | +191514 |
| 4sealed | 7 | Steht, Lee (1532) | Lost 0-2 | -181496 |
| 5sealed | 49 | Borek, Ales (1531) | Won 2-1 | +191515 |
| 6sealed | 44 | Breit, Bernhard (1624) | Lost 0-2 | -161499 |
| 7sealed | 83 | Lamper, Jan (1492) | Won 2-0 | +181517 |
| 8sealed | 50 | Boura, Evzen (1555) | Won 2-1 | +181535 |
| top | average opponent: 1536record: 6-2 | new rating: 1535 | ||
| Grand Prix Cologne 2001 (PLS limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | Kaiser, Jens (1505) | Won 2-0 | +191468 |
| 2sealed | 13 | Franz, Arne (1500) | Lost 0-1 | -171451 |
| 3sealed | 148 | Goerke, Jan-peter (1499) | Won 2-0 | +191470 |
| 4sealed | 138 | Hernandez, Mark (1430) | Won 2-1 | +171487 |
| 5sealed | 40 | Hartmann, Ulrich (1535) | Won 2-1 | +191506 |
| 6sealed | 62 | Leppert, Stefan (1532) | Lost 1-2 | -171489 |
| 7sealed | 68 | Wohlmuth, Andreas (1536) | Lost 0-2 | -181471 |
| 8sealed | 96 | Preyer, Thomas (1694) | Lost 0-2 | -141457 |
| top | average opponent: 1529record: 4-4 | new rating: 1457 | ||
| Grand Prix Amsterdam 2001 (INV limited) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 75 | Klijn, Arthur (1500) | Won 2-0 | +201448 |
| 2sealed | 122 | De Meyer, Lieven (1517) | Won 2-0 | +191467 |
| 3sealed | 3 | Hugi, Niklaus (1640) | Lost 1-2 | -151452 |
| 4sealed | 109 | Marek, Libor (1547) | Won 2-0 | +201472 |
| 5sealed | 110 | Karlsson, Mats (1555) | Won 2-1 | +191491 |
| 6sealed | 52 | Parker, Brock (1718) | Lost 1-2 | -141477 |
| 7sealed | 79 | Kastle, Darwin (1782) | Lost 1-2 | -121465 |
| 8sealed | 92 | Nunes, Goncalo (1609) | Lost 1-2 | -161449 |
| top | average opponent: 1609record: 4-4 | new rating: 1449 | ||
| Grand Prix Florence 2000 (extended) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 101 | Braccesi, Carlo (1500) | Lost 0-2 | -181463 |
| 3extended | 154 | Tarsi, Giacomo (1500) | Lost 0-2 | -171446 |
| 4extended | 219 | Bonacina, Luigi (1465) | Lost 0-2 | -181428 |
| top | average opponent: 1488record: 0-3 | new rating: 1428 | ||
| 2000 European Championship (mixed) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 73 | Egli, Andre (1500) | Won 2-0 | +181518 |
| 2draft | 41 | Horecki, Tomek Goral (1518) | Lost 0-2 | -181500 |
| 3draft | 68 | Rebagliati, Nicola (1449) | Lost 0-2 | -191481 |
| top | average opponent: 1489record: 1-2 | new rating: 1481 | ||