Boonen, Jonas
Current rating: 1490
Record: 2-3
| Grand Prix Brussels 2004 (DST standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 73 | Coeckelbergh, Gert (1922) | Won 2-0 | +251525 |
| 2standard | 63 | Massart, Philippe (1571) | Lost 1-2 | -171508 |
| 3standard | 144 | De Waegeneer, Joran (1499) | Lost 1-2 | -181490 |
| 4standard | 316 | Visser, Johannes (1481) | Won 2-1 | +181508 |
| 5standard | 164 | Vlasman, Johan (1536) | Lost 1-2 | -181490 |
| average opponent: 1602record: 2-3 | new rating: 1490 | |||