de Vaan, Bas
Current rating: 1449
Record: 11-16
| Regional Championships Naples 2023 (ONE standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 112 | Basilico, Mattia (1532) | Won 2-1 | +191502 |
| 2standard | 29 | Battista, Giuseppe (1626) | Lost 1-2 | -161486 |
| 3standard | 155 | Pasqui, Giulio (1603) | Lost 0-2 | -161470 |
| 4standard | 144 | Corpus Selva, Rogelio (1789) | Lost 1-2 | -121458 |
| 5standard | 163 | Ramboa, Thierry (1983) | Lost 0-2 | -91449 |
| top | average opponent: 1707record: 1-4 | new rating: 1449 | ||
| Grand Prix Utrecht 2019 (ELD limited) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 636 | Gins, Wim (1807) | Lost 1-2 | -131517 |
| 2sealed | 717 | Ang, Arjan (1641) | Lost 0-2 | -151502 |
| 3sealed | 654 | Schipstra, Kees (1463) | Lost 1-2 | -191483 |
| top | average opponent: 1637record: 0-3 | new rating: 1483 | ||
| Grand Prix Paris 2014 (legacy) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 99 | Meijers, Vincent (1500) | Lost 1-2 | -191511 |
| 2legacy | 452 | Girard, Jean-Remi (1542) | Won 2-0 | +191530 |
| 3legacy | 578 | Costa, Marcel (1500) | Won 2-1 | +171547 |
| 4legacy | 263 | Rikberg, Svante (1676) | Won 2-0 | +201567 |
| 5legacy | 388 | Mueller, Szymon (1607) | Lost 1-2 | -171550 |
| 6legacy | 288 | Aelbrecht, Jimmy (1457) | Lost 1-2 | -201530 |
| top | average opponent: 1547record: 3-3 | new rating: 1530 | ||
| Grand Prix Antwerp 2013 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 110 | Tonus, Michael (1500) | Won 2-0 | +191483 |
| 2modern | 351 | Shelepov, Denys (1486) | Won 2-1 | +181501 |
| 3modern | 5 | Allouchery, Gonzague (1746) | Won 2-1 | +221523 |
| 4modern | 152 | Da Cunha, Charles (1665) | Lost 0-2 | -151508 |
| 5modern | 219 | thomas, urier (1538) | Won 2-0 | +181526 |
| 6modern | 82 | Cartechini, Mariano (1644) | Won 2-1 | +211547 |
| 7modern | 134 | Vretman, Alexandre (1526) | Lost 0-2 | -191528 |
| 8modern | 146 | Molle, Niels (1562) | Lost 0-2 | -171511 |
| 9modern | 206 | Stuetzle, Dominik (1557) | Won 2-1 | +191530 |
| top | average opponent: 1581record: 6-3 | new rating: 1530 | ||
| Grand Prix Bochum 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 569 | Bubnowski, Magdalena (1447) | Won 2-0 | +171517 |
| 2standard | 699 | Hoyer, Roland (1518) | Lost 1-2 | -181499 |
| 3standard | 737 | Gerth, Christopher (1542) | Lost 1-2 | -171482 |
| 4standard | 890 | Marcolungo, Gregory (1502) | Lost 1-2 | -181464 |
| top | average opponent: 1502record: 1-3 | new rating: 1464 | ||