Pieroni, Federico
Current rating: 1371
Record: 6-14-2
| Grand Prix Valencia 2013 (THS limited) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 231 | Pibernat Roses, Marc (1466) | Lost 1-2 | -181419 |
| 2sealed | 272 | Ricardo, Joana (1481) | Won 2-1 | +191438 |
| 3sealed | 294 | Perez Mateu, Jose anto (1500) | Lost 0-2 | -161422 |
| 4sealed | 445 | Cruz, Raul (1486) | Lost 1-2 | -171405 |
| 5sealed | 460 | Canete Hortelano, Luis (1468) | Lost 1-2 | -171388 |
| 6sealed | 418 | Moragues Vidal, Juan Luis (1454) | Lost 0-2 | -171371 |
| top | average opponent: 1476record: 1-5 | new rating: 1371 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 95 | Zahora, Jan (1500) | Won 2-0 | +201452 |
| 2sealed | 46 | Prasse, Stefan (1474) | Lost 0-2 | -181434 |
| 3sealed | 258 | Nachtigall, Jaroslav (1472) | Draw 1-1 | +11435 |
| 4sealed | 245 | Vermeiren, Yves (1496) | Lost 1-2 | -171418 |
| 5sealed | 283 | Sofinski, Patryk (1478) | Won 2-1 | +191437 |
| top | average opponent: 1484record: 2-2-1 | new rating: 1437 | ||
| Grand Prix Turin 2006 (DIS limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 118 | Morra, Matteo (1522) | Lost 0-2 | -171466 |
| 2sealed | 249 | Longo, Mattia (1567) | Lost 1-2 | -161450 |
| 3sealed | 249 | Giannini, Giorgio (1464) | Lost 1-2 | -181432 |
| top | average opponent: 1518record: 0-3 | new rating: 1432 | ||
| Grand Prix Bologna 2005 (SOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 205 | Martins, Tony (1627) | Lost 0-2 | -161484 |
| 2sealed | 232 | Albertazzi, Simone (1482) | Lost 0-2 | -181466 |
| 3sealed | 295 | Grinovero, Sanne (1464) | Won 2-1 | +181484 |
| 4sealed | 261 | Ghirardello, Alberto (1481) | Won 2-0 | +181502 |
| 5sealed | 201 | Mesolella, Manuel (1500) | Lost 0-2 | -181484 |
| 6sealed | 183 | Hugony, Francesco (1521) | Won 2-1 | +191503 |
| 7sealed | 132 | Conka, Stefan (1428) | Draw 1-1 | -21501 |
| 8sealed | 116 | Dell'Amico, Matteo (1503) | Lost 0-2 | -181483 |
| top | average opponent: 1501record: 3-4-1 | new rating: 1483 | ||