Driessen, Roy
Current rating: 1453
Record: 10-14-3
| Grand Prix Gothenburg 2013 (DGM limited) | starting rating: 1421 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 150 | Jancke, Christoffer (1500) | Lost 0-2 | -171404 |
| 2sealed | 363 | Simpson, Craig (1429) | Won 2-0 | +191423 |
| 3sealed | 179 | Thonsri, Emil (1505) | Won 2-1 | +191442 |
| 4sealed | 241 | Dalasen, Bard (1523) | Won 2-0 | +201462 |
| 5sealed | 136 | Le Briand, Loic (1839) | Lost 1-2 | -121450 |
| 6sealed | 153 | Moen, Espen (1423) | Won 2-1 | +181468 |
| 7sealed | 34 | Say, Ian (1659) | Lost 0-2 | -151453 |
| top | average opponent: 1554record: 4-3 | new rating: 1453 | ||
| Grand Prix Moscow 2012 (M13 limited) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 109 | Gasperoni, Andrea (1490) | Lost 1-2 | -171456 |
| 2sealed | 297 | Iskornev, Oleg (1472) | Lost 1-2 | -181438 |
| 3sealed | 368 | Bykov, Maxim (1464) | Won 2-1 | +181456 |
| 4sealed | 284 | Erofeev, Ilya Mihailov (1465) | Lost 0-2 | -171439 |
| 5sealed | 350 | Stolnikov, Sergey (1464) | Lost 0-2 | -181421 |
| top | average opponent: 1471record: 1-4 | new rating: 1421 | ||
| Grand Prix Milan 2011 (ISD limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 126 | Gabrovski, Andrey (1500) | Won 2-0 | +191466 |
| 2sealed | 124 | Theologitis, George (1476) | Draw 1-1 | 01466 |
| 3sealed | 137 | Brusatori, Giacomo (1539) | Won 2-1 | +191485 |
| 4sealed | 127 | Maroselli, Jean-philippe (1527) | Won 2-0 | +191504 |
| 5sealed | 66 | Frohlich, Florian (1529) | Lost 1-2 | -181486 |
| 6sealed | 126 | Calafell, Joel (1774) | Lost 0-2 | -131473 |
| top | average opponent: 1557record: 3-2-1 | new rating: 1473 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 565 | Depouillon, Bert (1554) | Draw 1-1 | +11482 |
| 2sealed | 656 | Geberovich, Benjamin (1521) | Lost 0-2 | -171465 |
| 3sealed | 726 | Kuchar, Tomas (1482) | Draw 1-1 | 01465 |
| 4sealed | 768 | Musil, Tadeas (1414) | Lost 0-2 | -181447 |
| top | average opponent: 1493record: 0-2-2 | new rating: 1447 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 571 | Portele, Patrick (1451) | Lost 0-2 | -191481 |
| 2sealed | 790 | Hradecky, Jirka (1482) | Won 2-0 | +181499 |
| 3sealed | 783 | Koleno, Patrik (1498) | Lost 0-2 | -181481 |
| 4sealed | 757 | Macek, Petr (1482) | Won 2-1 | +181499 |
| 5sealed | 699 | Luppi, Stefano (1499) | Lost 0-2 | -181481 |
| top | average opponent: 1483record: 2-3 | new rating: 1481 | ||