Zalewski, Marcin
Current rating: 1685
| Grand Prix Brussels 2004 (DST standard) | starting rating: 1646 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 91 | Urban, Stefan (1518) | Won 2-1 | +161662 |
| 3standard | 64 | Roesberg, Marcel (1475) | Lost 0-2 | -221640 |
| 4standard | 193 | Lucien, Andre (1600) | Won 2-0 | +181658 |
| 5standard | 105 | Samsonoff, Stephane (1464) | Won 2-1 | +141672 |
| 6standard | 48 | Dumontier, Sebastien (1525) | Won 2-0 | +161688 |
| 7standard | 34 | Staes, Bram (1593) | Lost 1-2 | -201668 |
| 8standard | 57 | Wessels, Frank (1608) | Won 2-0 | +171685 |
| top | average opponent: 1540record: 5-2 | new rating: 1685 | ||
| Grand Prix Munich 2003 (MRD limited) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 129 | Blumer, Yann (1800) | Won 2-1 | +231594 |
| 3sealed | 69 | Steinbock, Kai (1541) | Won 2-0 | +171611 |
| 4sealed | 53 | Warmenhoven, Ruud (1667) | Lost 1-2 | -171594 |
| 5sealed | 149 | Rivas, Mateo (1469) | Lost 0-2 | -211573 |
| 6sealed | 249 | Hainer, Helmut (1642) | Won 2-0 | +201593 |
| 7sealed | 104 | Krutil, Daniel (1608) | Won 2-0 | +181611 |
| 8sealed | 61 | Mifsud, Stephen (1535) | Won 2-0 | +161627 |
| 9sealed | 61 | Jedlicka, Niki (1661) | Won 2-1 | +191646 |
| top | average opponent: 1615record: 6-2 | new rating: 1646 | ||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 31 | Fellinghauer, Jiri (1500) | Won 2-0 | +181518 |
| 2sealed | 105 | Mikolas, Alexander (1518) | Won 2-1 | +181536 |
| 3sealed | 105 | Schreurs, Jos (1825) | Lost 1-2 | -131523 |
| 4sealed | 122 | Zoubal, Frantisek (1486) | Won 2-1 | +171540 |
| 5sealed | 119 | Josupeit, Frank (1575) | Won 2-1 | +191559 |
| 6sealed | 70 | Gausdal, Bjorn (1735) | Won 2-0 | +211580 |
| 7sealed | 61 | Aguado, Saul (1770) | Lost 1-2 | -141566 |
| 8sealed | 93 | Labarre, Nicolas (1868) | Lost 0-2 | -131553 |
| 9sealed | 84 | Vystejn, Jiri (1573) | Won 2-1 | +181571 |
| top | average opponent: 1650record: 6-3 | new rating: 1571 | ||