Ewen, Marc
Current rating: 1526
| Grand Prix Hasselt 2006 (RAV limited) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 196 | van den Wouwer, Chris (1462) | Won 2-0 | +171541 |
| 2sealed | 90 | Rus, Tine (1664) | Won 2-1 | +201561 |
| 3sealed | 32 | De Wael, Tom (1625) | Lost 0-2 | -171544 |
| 4sealed | 117 | Hulkenberg, Jasper (1520) | Lost 1-2 | -181526 |
| top | average opponent: 1568record: 2-2 | new rating: 1526 | ||
| Grand Prix Leipzig 2005 (BOK limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 104 | Walther, Steve (1500) | Won 2-0 | +181537 |
| 2sealed | 29 | Eder, Wolfgang (1798) | Lost 0-2 | -131524 |
| 3sealed | 159 | Gustavsson, Gustav (1459) | Lost 0-2 | -191505 |
| 4sealed | 154 | Weigert, Thilo (1482) | Won 2-1 | +171522 |
| 5sealed | 100 | Jorgensen, Martin (1502) | Won 2-1 | +181540 |
| 6sealed | 73 | Le Montagner, Mathieu (1657) | Lost 0-2 | -161524 |
| top | average opponent: 1566record: 3-3 | new rating: 1524 | ||
| Grand Prix Brussels 2004 (DST standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 137 | Chonquet, Fabien (1527) | Lost 1-2 | -171483 |
| 2standard | 203 | De La Fosse, Sebastien (1492) | Lost 1-2 | -181465 |
| 3standard | 278 | Schultes, Tim (1464) | Draw 1-1 | 01465 |
| 4standard | 321 | Rottiers, Antoine (1517) | Lost 0-2 | -171448 |
| 5standard | 305 | Vervisch, Gregory (1446) | Won 2-0 | +181466 |
| 6standard | 255 | Gobbels, Jasper (1466) | Won 2-0 | +181484 |
| 7standard | 197 | Buffat, Gauthier (1505) | Won 2-1 | +181502 |
| 8standard | 143 | Jankowski, Denis (1470) | Won 2-0 | +171519 |
| top | average opponent: 1486record: 4-3-1 | new rating: 1519 | ||