Pierrot, Frederic
Current rating: 1363
| Grand Prix Paris 2008 (ALA limited) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 281 | Bouguern, Nory (1514) | Lost 0-2 | -171412 |
| 2sealed | 335 | Romano, Maxime (1482) | Lost 0-2 | -171395 |
| 3sealed | 412 | Untz, Nicolas (1412) | Won 2-0 | +191414 |
| 4sealed | 364 | Try, Serge (1481) | Lost 0-2 | -171397 |
| 5sealed | 341 | Bosdeveix, Jimmy (1464) | Lost 1-2 | -171380 |
| 6sealed | 304 | Militon, Alexandre (1447) | Lost 1-2 | -171363 |
| top | average opponent: 1467record: 1-5 | new rating: 1363 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Muller, Flavio (1578) | Lost 1-2 | -171484 |
| 2sealed | 217 | Freudenthaler, Dennis (1485) | Lost 0-2 | -181466 |
| 3sealed | 266 | Voelker, Bernd (1446) | Lost 0-2 | -181448 |
| 4sealed | 311 | Rauser, Thomas (1403) | Lost 0-2 | -191429 |
| 5sealed | 285 | Denies, Sabine (1413) | Lost 0-2 | -181411 |
| 6sealed | 240 | Siller, Julian (1411) | Won 2-1 | +181429 |
| top | average opponent: 1456record: 1-5 | new rating: 1429 | ||
| Grand Prix Paris 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 246 | Benezech, Lionel (1615) | Won 2-1 | +201520 |
| 2sealed | 58 | van den Brink, Peter (1525) | Lost 0-2 | -181502 |
| 3sealed | 232 | van Reijmersdal, Niels (1466) | Won 2-0 | +181520 |
| 4sealed | 101 | Hessens, Oliver (1470) | Lost 0-2 | -191501 |
| top | average opponent: 1519record: 2-2 | new rating: 1501 | ||