Stals, Mark
Current rating: 1604
| Grand Prix Brussels 2008 (SHM limited) | starting rating: 1588 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 35 | Mezhoud, Hakim (1541) | Lost 1-2 | -191569 |
| 2sealed | 259 | Golm, Martin (1486) | Won 2-0 | +171586 |
| 3sealed | 138 | Mercier, Johny (1500) | Won 2-0 | +161602 |
| 4sealed | 203 | Rasir, Tobias (1750) | Won 2-0 | +211623 |
| 5sealed | 53 | Koekemoer, Marthinus (1560) | Lost 0-2 | -191604 |
| top | average opponent: 1567record: 3-2 | new rating: 1604 | ||
| Grand Prix Hasselt 2006 (RAV limited) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Aydogdu, Abdu (1500) | Lost 0-2 | -191534 |
| 2sealed | 217 | Pobis, Jakub (1603) | Won 2-0 | +191553 |
| 3sealed | 129 | Rieff, Menno (1594) | Won 2-0 | +191572 |
| 4sealed | 88 | Neyens, Kris (1552) | Lost 0-2 | -191553 |
| 5sealed | 156 | Baro, Christophe (1500) | Won 2-1 | +171570 |
| 6sealed | 98 | Vervloet, Jeroen (1526) | Won 2-0 | +181588 |
| 7sealed | 75 | Liersch, David (1535) | Won 2-1 | +171605 |
| 8sealed | 31 | Massat, Nicolas (1685) | Lost 0-2 | -171588 |
| top | average opponent: 1562record: 5-3 | new rating: 1588 | ||
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 39 | Herpig, Benjamin (1500) | Won 2-1 | +181518 |
| 2extended | 33 | Bender, Bagus (1518) | Lost 1-2 | -181500 |
| 3extended | 287 | theuns, Carl (1450) | Won 2-1 | +171517 |
| 4extended | 173 | Merkel, Sebastian (1517) | Won 2-0 | +181535 |
| 5extended | 168 | Protzek, Till (1611) | Won 2-1 | +191554 |
| 6extended | 44 | Lemaire, Sylvain (1516) | Won 2-0 | +181572 |
| 7extended | 22 | Negrini, Matteo (1508) | Lost 1-2 | -191553 |
| top | average opponent: 1517record: 5-2 | new rating: 1553 | ||