Marquardt, Sebastian
Current rating: 1522
Record: 8-7-2
| Grand Prix Heidelberg 2002 (TOR limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 166 | Wang, LeJeng (1518) | Lost 1-2 | -181520 |
| 3sealed | 181 | Muller, Falko (1499) | Won 2-1 | +181538 |
| 4sealed | 200 | van Damme, Guy (1506) | Draw 1-1 | -11537 |
| 5sealed | 161 | Stanoev, Ivan (1682) | Lost 1-2 | -151522 |
| average opponent: 1551record: 1-2-1 | new rating: 1522 | |||
| Grand Prix Cologne 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 107 | Ludovici, Tobias (1518) | Won 2-0 | +181518 |
| 3sealed | 5 | Sejdiu, Demir (1502) | Lost 0-2 | -181500 |
| 4sealed | 127 | Vercruysse, Jeroen (1484) | Won 2-1 | +181518 |
| 5sealed | 46 | Wiese, Michael (1473) | Won 2-1 | +171535 |
| 6sealed | 42 | Muller, Michael (1574) | Won 2-0 | +191554 |
| 7sealed | 31 | Diezel, Michael (1518) | Lost 1-2 | -191535 |
| 8sealed | 36 | Goldbaum, Nils-Uwe (1560) | Won 2-0 | +181553 |
| 9draft | 24 | Hugi, Niklaus (1657) | Lost 1-2 | -161537 |
| 10draft | 31 | Mehta, Dinesh (1487) | Won 2-0 | +171554 |
| 11draft | 16 | van Leeuwen, Gerard (1583) | Draw 1-1 | +11555 |
| 12draft | 21 | Ecker, Danny (1567) | Won 2-1 | +181573 |
| 13draft | 16 | Muller, Andre (1611) | Lost 0-2 | -171556 |
| 14draft | 20 | Philippczyk, Bjorn (1581) | Lost 0-2 | -181538 |
| average opponent: 1547record: 7-5-1 | new rating: 1538 | |||