Van Herrewegen, Siegfried
Current rating: 1379
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 95 | Sobanski, Pascal (1501) | Lost 0-2 | -171413 |
| 2standard | 335 | Fovet, Sylvain (1393) | Lost 0-2 | -181395 |
| 3standard | 529 | Miseroux, Vincent (1482) | Lost 1-2 | -161379 |
| top | average opponent: 1459record: 0-3 | new rating: 1379 | ||
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 197 | Dolscheid, Raphael (1640) | Lost 0-2 | -141438 |
| 2standard | 357 | Nitsche, Markus (1478) | Won 2-0 | +181456 |
| 3standard | 343 | Verbeken, Dirk (1687) | Lost 1-2 | -141442 |
| 4standard | 481 | Van De Ven, Phillip (1481) | Won 2-0 | +191461 |
| 5standard | 431 | Sondag, Guido (1738) | Lost 1-2 | -131448 |
| 6standard | 420 | Raffel, Heiko (1448) | Lost 1-2 | -181430 |
| top | average opponent: 1579record: 2-4 | new rating: 1430 | ||
| Grand Prix Brussels 2015 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 355 | Schneider, Patrick (1696) | Lost 0-0 | -141486 |
| 2standard | 516 | Klose, Niels (1394) | Won 0-0 | +161502 |
| 3standard | 713 | Wallin, Peter (1725) | Won 2-1 | +221524 |
| 4standard | 432 | Vantyghem, Xavier (1540) | Lost 1-2 | -181506 |
| 5standard | 521 | Hammarstrom, Teodor (1505) | Lost 0-2 | -181488 |
| 6standard | 629 | Van Laken, Tom (1518) | Won 2-0 | +191507 |
| 7standard | 443 | Bismo, Ryan (1478) | Lost 0-2 | -191488 |
| 8standard | 489 | Hanski, Marek (1503) | Lost 0-2 | -181470 |
| 9standard | 424 | Casamenti, Andrea (1456) | Lost 1-2 | -181452 |
| top | average opponent: 1535record: 3-6 | new rating: 1452 | ||