Casteleijn, Maarten
Current rating: 1583
Record: 12-10
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 27 | Orellana, Eduardo (1597) | Lost 1-2 | -161430 |
| 2standard | 313 | Drapala, Thomas (1727) | Lost 0-2 | -121418 |
| 3standard | 490 | De Staercke, Jimmy (1399) | Won 2-0 | +171435 |
| 4standard | 418 | Van Roeyen, Luc (1482) | Won 2-0 | +191454 |
| 5standard | 433 | Bastian, Ruben (1526) | Won 2-0 | +201474 |
| 6standard | 317 | Klimczyk, Wojtek (1502) | Won 2-0 | +181492 |
| 7standard | 142 | Thur, Marnic (1660) | Won 2-1 | +211513 |
| 8standard | 115 | Kohl, Reinhold (1867) | Won 2-1 | +241537 |
| 9standard | 69 | Rothen, Christian (1889) | Won 2-0 | +241561 |
| 10standard | 48 | Zhang, Yin (1738) | Lost 1-2 | -141547 |
| 11standard | 63 | Green, Christoph (1627) | Won 2-1 | +191566 |
| 12standard | 35 | Grosch, Mirko (1629) | Won 2-1 | +191585 |
| 13standard | 23 | Vieren, Pascal (2023) | Lost 0-2 | -101575 |
| 14standard | 58 | Boucek, Jaroslav (1863) | Won 2-1 | +231598 |
| 15standard | 52 | Lebon, Tristan (1771) | Lost 1-2 | -151583 |
| average opponent: 1687record: 10-5 | new rating: 1583 | |||
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 267 | Lafon, Charles (1657) | Lost 0-2 | -151485 |
| 2standard | 349 | Strauss, Gary (1556) | Lost 1-2 | -171468 |
| 3standard | 584 | Arndt, Jochen (1457) | Won 2-1 | +181486 |
| 4standard | 562 | van der Linden, Bob (1468) | Lost 0-2 | -181468 |
| 5standard | 556 | Beckmann, Marcel (1361) | Lost 1-2 | -201448 |
| 6standard | 532 | Asselman, Steven (1335) | Won 2-1 | +161464 |
| 7standard | 485 | Becker, Philipp (1470) | Lost 0-2 | -181446 |
| average opponent: 1472record: 2-5 | new rating: 1446 | |||