Da Costa, Tony
Current rating: 1582
| Grand Prix Paris 2011 (MBS limited) | starting rating: 1610 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1015 | Turek, Julien (1518) | Lost 0-2 | -201590 |
| 2sealed | 1239 | Wallerand, Olivier (1488) | Won 2-0 | +171607 |
| 3sealed | 1223 | Sykko, Marko (1500) | Lost 1-2 | -201587 |
| 4sealed | 1300 | Desgeorges, Thomas (1481) | Won 2-0 | +161603 |
| 5sealed | 1221 | Van den Brande, Frank (1451) | Lost 0-2 | -211582 |
| top | average opponent: 1488record: 2-3 | new rating: 1582 | ||
| Grand Prix Hasselt 2006 (RAV limited) | starting rating: 1646 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 9 | Reiter, Micha (1777) | Lost 0-2 | -151631 |
| 3sealed | 119 | Basmagi, Said (1490) | Lost 0-2 | -211610 |
| top | average opponent: 1634record: 0-2 | new rating: 1610 | ||
| Grand Prix Lille 2005 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 418 | Alexandre, Denis (1500) | Won 2-0 | +181518 |
| 2legacy | 341 | Gansel, Toni (1582) | Won 2-1 | +191537 |
| 3legacy | 377 | Lybaert, Marijn (1601) | Won 2-1 | +191556 |
| 4legacy | 346 | Marie, Julien (1500) | Won 2-0 | +171573 |
| 5legacy | 337 | Ofner, Sebastian (1518) | Won 2-1 | +171590 |
| 6legacy | 331 | Bruno, Vincent (1577) | Lost 0-2 | -181572 |
| 7legacy | 333 | Baglin, Arnaud (1666) | Won 2-0 | +201592 |
| 8legacy | 339 | Chhour, Nicolas4 (1629) | Won 2-0 | +181610 |
| 9legacy | 330 | Roelofs, Frank (1730) | Won 2-0 | +211631 |
| 10legacy | 9 | Manaranche, Stephane (1677) | Won 2-0 | +181649 |
| 11legacy | 3 | Brenner, Martin (1553) | Lost 0-2 | -191630 |
| 12legacy | 7 | Lahanas, Nikolaos (1828) | Lost 1-2 | -151615 |
| 13legacy | 15 | Ruel, Olivier (2124) | Won 2-1 | +271642 |
| 14legacy | 14 | Fuellhase, Tobias (1635) | Lost 0-2 | -181624 |
| 15legacy | 17 | Ruel, Antoine (1878) | Won 2-1 | +221646 |
| top | average opponent: 1666record: 11-4 | new rating: 1646 | ||