Piegsa, David
Current rating: 1444
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 43 | Paty, Jeremie (1361) | Lost 1-2 | -191424 |
| 2pioneer | 522 | Bous, Jerome (1392) | Lost 0-2 | -191405 |
| 3pioneer | 786 | Caligaris, Alessandro (1420) | Lost 0-2 | -181387 |
| 4pioneer | 794 | Fanning, Jack (1447) | Draw 1-1 | +21389 |
| 5pioneer | 726 | Arndt, Jochen (1485) | Won 2-0 | +191408 |
| 6pioneer | 611 | Bergis, Jean (1446) | Won 2-1 | +191427 |
| 7pioneer | 481 | Ostmann, Mark (1397) | Won 2-1 | +171444 |
| top | average opponent: 1421record: 3-3-1 | new rating: 1444 | ||
| Grand Prix Ghent 2012 (legacy) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 761 | Oria, Antoine (1315) | Lost 1-2 | -211461 |
| 2legacy | 810 | Lindl, Tobias (1488) | Won 2-0 | +181479 |
| 3legacy | 745 | Matyas, Sebastian (1423) | Won 2-1 | +171496 |
| 4legacy | 791 | van der Vegt, Jan (1496) | Lost 0-2 | -181478 |
| 5legacy | 851 | Mangot, Stephane (1502) | Lost 0-2 | -171461 |
| 6legacy | 851 | Hallavo, Ville (1490) | Lost 1-2 | -181443 |
| top | average opponent: 1452record: 2-4 | new rating: 1443 | ||
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 88 | Watson, Stuart (1489) | Lost 1-2 | -181482 |
| 2legacy | 306 | Zuffa, Andrea (1482) | Won 2-0 | +181500 |
| 3legacy | 265 | Skalski, Janusz (1499) | Lost 1-2 | -181482 |
| 4legacy | 386 | Van den Bulck, Steve (1482) | Won 2-1 | +181500 |
| 5legacy | 253 | Couvert, Clement (1468) | Won 2-0 | +171517 |
| 6legacy | 208 | Tichadou, Stephane (1546) | Lost 1-2 | -171500 |
| 7legacy | 221 | Sourcin, Christoph (1505) | Lost 0-2 | -181482 |
| top | average opponent: 1496record: 3-4 | new rating: 1482 | ||