Pierredon, Sylvain
Current rating: 1452
Record: 5-8
| Grand Prix Liverpool 2015 (FRF limited) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 98 | Vurnek, Kresimir (1508) | Lost 0-2 | -171443 |
| 2sealed | 724 | Slowey, James (1482) | Won 2-1 | +191462 |
| 3sealed | 593 | Kathriner, Roman (1793) | Won 2-1 | +241486 |
| 4sealed | 383 | Burchett, Autumn (1582) | Lost 0-2 | -171469 |
| 5sealed | 455 | Sitch, Peter (1505) | Lost 0-2 | -171452 |
| average opponent: 1574record: 2-3 | new rating: 1452 | |||
| Grand Prix Madrid 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 76 | Levy, Jonathan [ISR] (1471) | Lost 0-2 | -191481 |
| 2sealed | 190 | Garcia Fernandez, Borja (1418) | Lost 1-2 | -191462 |
| 3sealed | 265 | Davydov, Vsevolod (1447) | Won 2-0 | +181480 |
| 4sealed | 287 | Pazos, Lorena (1404) | Lost 1-2 | -191461 |
| 5sealed | 284 | Curto, Eduardo (1470) | Lost 1-2 | -181443 |
| 6sealed | 269 | Gomez Felices, Pablo (1427) | Won 2-0 | +181461 |
| 7sealed | 228 | Banasiak, Ewelina (1379) | Won 2-0 | +161477 |
| 8sealed | 183 | Caires Mendonca, Ildef (1536) | Lost 0-2 | -171460 |
| average opponent: 1444record: 3-5 | new rating: 1460 | |||