Marczak, Ralph
Current rating: 1463
Record: 6-8-1
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 467 | Michel, Damien (1500) | Draw 1-1 | 01501 |
| 2standard | 373 | Reterink, Henri (1501) | Lost 0-2 | -181483 |
| 3standard | 601 | Lai, Kim Man (1416) | Won 2-0 | +161499 |
| 4standard | 475 | Balado Bradarich, Jose Alejandro (1625) | Lost 0-2 | -151484 |
| 5standard | 583 | Porten, Andreas (1342) | Lost 1-2 | -211463 |
| 6standard | 576 | Wiench, Dirk (1467) | Lost 0-2 | -181445 |
| 7standard | 502 | Leenen, Lars (1443) | Won 2-0 | +181463 |
| 8standard | 410 | van Brussel, Mark (1462) | Won 2-1 | +181481 |
| 9standard | 339 | Farber, Florian (1481) | Lost 0-2 | -181463 |
| average opponent: 1471record: 3-5-1 | new rating: 1463 | |||
| Grand Prix Bochum 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 233 | De Baerdemaeker, Floris (1500) | Lost 1-2 | -181482 |
| 2standard | 277 | Hedemann, Marcel (1502) | Lost 0-2 | -181464 |
| 3standard | 351 | Jansen, Mark (1464) | Won 2-0 | +181482 |
| 4standard | 313 | Lang, Patrick (1414) | Won 2-0 | +171499 |
| 5standard | 305 | Benneji, Frederic (1594) | Lost 0-2 | -161483 |
| 6standard | 262 | Grijs, Jolmer D (1468) | Won 2-0 | +181501 |
| average opponent: 1490record: 3-3 | new rating: 1501 | |||