De Ridder, Maarten
Current rating: 1353
Record: 17-31-1
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1339 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 831 | Paris, Steven (1500) | Lost 1-2 | -151324 |
| 2legacy | 869 | Tsorbatzidis, Vasilis (1471) | Lost 1-2 | -151309 |
| 3legacy | 945 | Hondius, Merrin L (1435) | Lost 0-2 | -161293 |
| 4legacy | 1033 | Portales, Raul (1611) | Won 2-0 | +241317 |
| 5legacy | 1001 | Neumann, Joaquim (1431) | Lost 0-2 | -161301 |
| 6legacy | 970 | Bleys, Tony (1592) | Lost 0-2 | -131288 |
| 7legacy | 919 | Sweet, Iskander (1430) | Won 2-0 | +201308 |
| 8legacy | 849 | Gartner, Marian (1445) | Won 2-1 | +211329 |
| 9legacy | 790 | Tornros, Mats (1658) | Won 2-0 | +241353 |
| top | average opponent: 1508record: 4-5 | new rating: 1353 | ||
| Grand Prix Brussels 2010 (WWK standard) | starting rating: 1368 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 130 | De Decker, Tom (1478) | Lost 0-2 | -161352 |
| 2standard | 321 | Sargos, Nicolas (1449) | Lost 1-2 | -161336 |
| 3standard | 315 | Sacco, Sergio (1410) | Won 2-1 | +191355 |
| 4standard | 345 | Lojek, Lukasz (1482) | Lost 0-2 | -161339 |
| top | average opponent: 1455record: 1-3 | new rating: 1339 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1376 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 720 | Kittl, Christian (1431) | Won 2-0 | +191395 |
| 2sealed | 567 | Fibigr(cze), Tomas (1518) | Lost 0-2 | -161379 |
| 3sealed | 689 | Princ, Lukas (1499) | Lost 0-2 | -161363 |
| 4sealed | 777 | Podjukl, Martin (1483) | Won 2-1 | +211384 |
| 5sealed | 696 | Lipovec, Jernej (1505) | Lost 0-2 | -161368 |
| top | average opponent: 1487record: 2-3 | new rating: 1368 | ||
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 454 | Pritsch, Max (1555) | Lost 1-2 | -151420 |
| 5sealed | 506 | Noe, Benjamin (1727) | Lost 0-2 | -131407 |
| 6sealed | 527 | Frederiksen, Anders (1569) | Lost 1-2 | -151392 |
| 7sealed | 544 | Van De Griendt, Freek (1501) | Lost 0-2 | -161376 |
| top | average opponent: 1588record: 0-4 | new rating: 1376 | ||
| Grand Prix Paris 2008 (ALA limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 132 | Guit, Laurent (1529) | Won 2-0 | +201465 |
| 3sealed | 46 | Szegho, Dalibor (1697) | Lost 1-2 | -141451 |
| 4sealed | 173 | Teeuws, Stijn (1577) | Lost 1-2 | -161435 |
| top | average opponent: 1601record: 1-2 | new rating: 1435 | ||
| Grand Prix Brussels 2008 (SHM limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 234 | Golm, Martin (1505) | Won 2-0 | +191454 |
| 2sealed | 132 | Sauerborn, Moritz (1736) | Lost 0-2 | -131441 |
| 3sealed | 155 | van den Oever, Roy (1628) | Won 2-0 | +211462 |
| 4sealed | 169 | Schrodl, Florian (1521) | Lost 0-2 | -171445 |
| top | average opponent: 1597record: 2-2 | new rating: 1445 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 54 | Doise, Jan (1925) | Lost 0-2 | -101465 |
| 5sealed | 70 | Gurevich, Alexander (1543) | Lost 0-2 | -171448 |
| 6sealed | 106 | Wollaert, Kjell (1698) | Lost 0-2 | -131435 |
| top | average opponent: 1722record: 0-3 | new rating: 1435 | ||
| Grand Prix Hasselt 2006 (RAV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 5 | Payen, Laurent (1711) | Won 2-1 | +221522 |
| 5sealed | 14 | Belaid, Saadi (1575) | Draw 1-1 | +11523 |
| 6sealed | 14 | Kapalas, Georgios (1865) | Lost 0-2 | -121511 |
| 7sealed | 37 | Figura, Christian (1580) | Lost 1-2 | -171494 |
| 8sealed | 72 | Kaurinovic, Timmy (1433) | Lost 0-2 | -191475 |
| top | average opponent: 1633record: 1-3-1 | new rating: 1475 | ||
| Grand Prix Lille 2005 (legacy) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 171 | Gelan, Sven (1442) | Lost 0-2 | -191483 |
| 2legacy | 195 | Vanuynesberghe, Mathie (1482) | Won 2-1 | +181501 |
| 3legacy | 121 | Petit, Pierre (1464) | Lost 0-2 | -181483 |
| 4legacy | 158 | Dupont, Anthony (1466) | Won 2-0 | +171500 |
| 5legacy | 149 | Procaccianti, Manuel (1499) | Won 2-0 | +181518 |
| 6legacy | 118 | Klazinga, Steven (1518) | Lost 0-2 | -181500 |
| top | average opponent: 1479record: 3-3 | new rating: 1500 | ||
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 311 | Kozlowski, Chris (1500) | Won 2-0 | +181518 |
| 2extended | 206 | de Jong, Sven (1552) | Won 2-0 | +191537 |
| 3extended | 1 | Deckers, Thijs (1536) | Lost 1-2 | -181519 |
| 4extended | 267 | Grudowski, Dennis (1487) | Won 2-1 | +171536 |
| 5extended | 143 | van Ruth, Eelco (1500) | Lost 0-2 | -191517 |
| 6extended | 232 | Rentzsch, Stefan (1686) | Lost 1-2 | -151502 |
| top | average opponent: 1543record: 3-3 | new rating: 1502 | ||