Dittmann, Ralf
Current rating: 1422
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 459 | Leopold, Jan (1502) | Won 2-0 | +191476 |
| 2sealed | 779 | Vanbockstael, Theophile (1492) | Lost 1-2 | -181458 |
| 3sealed | 649 | Usevicius, Gediminas (1502) | Lost 0-2 | -171441 |
| 4sealed | 967 | Eckstein, Matthias (1381) | Lost 0-2 | -191422 |
| top | average opponent: 1469record: 1-3 | new rating: 1422 | ||
| Grand Prix Prague 2018 (modern) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 355 | Schwekendiek, Lukas (1500) | Won 2-0 | +181523 |
| 2modern | 353 | Osborne, James (1594) | Draw 1-1 | +11524 |
| 3modern | 437 | Chen, Ziming (1801) | Lost 0-2 | -131511 |
| 4modern | 637 | Mathijssen, Jesper (1501) | Lost 1-2 | -181493 |
| 5modern | 772 | Schertel, Ulli (1482) | Lost 0-2 | -181475 |
| 6modern | 776 | Pavlicek, Jan (1479) | Lost 0-2 | -181457 |
| top | average opponent: 1559record: 1-4-1 | new rating: 1457 | ||
| Grand Prix Brussels 2015 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 133 | Geeraerts, Jo (1815) | Lost 0-0 | -121488 |
| 2standard | 664 | Adams, Sean (1579) | Lost 0-0 | -171471 |
| 3standard | 935 | Gaspard, Alexandre (1426) | Won 2-0 | +171488 |
| 4standard | 773 | Jabs, Slawomir (1669) | Won 2-1 | +221510 |
| 5standard | 487 | Van Der Mast, Yves (1473) | Won 2-1 | +171527 |
| 6standard | 518 | Matthieu, Ben (1314) | Lost 0-2 | -221505 |
| top | average opponent: 1546record: 3-3 | new rating: 1505 | ||