Wielfaert, Koen
Current rating: 1399
| Grand Prix Paris 2008 (ALA limited) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 525 | Cardoso, Ricardo (1493) | Lost 0-2 | -171416 |
| 2sealed | 800 | Menten, Robbert (1445) | Lost 1-2 | -171399 |
| top | average opponent: 1469record: 0-2 | new rating: 1399 | ||
| Grand Prix Brussels 2008 (SHM limited) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 144 | Goncarov, Jan (1500) | Won 2-0 | +191459 |
| 2sealed | 20 | Johnson, Sven (1583) | Won 2-0 | +201479 |
| 3sealed | 67 | Massat, Nicolas (1761) | Lost 0-2 | -131466 |
| 4sealed | 149 | Dulac, Boris (1573) | Lost 1-2 | -161450 |
| 5sealed | 178 | Panebianco, Andrea (1496) | Lost 0-2 | -171433 |
| top | average opponent: 1583record: 2-3 | new rating: 1433 | ||
| Grand Prix Strasbourg 2007 (Time Spiral block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4block | 45 | Hadjadj, Julien (1504) | Won 2-0 | +181518 |
| 5block | 5 | Al-Bacha, Wesimo (1933) | Lost 1-2 | -111507 |
| 6block | 23 | Verwaerde, Benoit (1532) | Lost 1-2 | -171490 |
| 7block | 77 | Wellens, Wilson (1523) | Lost 0-2 | -181472 |
| 8block | 116 | Guedj, Tristan (1663) | Lost 1-2 | -141458 |
| 9block | 109 | Levy, Olivier (1474) | Lost 0-2 | -181440 |
| top | average opponent: 1605record: 1-5 | new rating: 1440 | ||