Vitta, Joanny
Current rating: 1501
Record: 7-7
| Grand Prix Lyon 2010 (ROE limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 669 | Cujean, Sebastien (1547) | Lost 0-2 | -181519 |
| 2sealed | 728 | Liardet, Samuel (1482) | Won 2-1 | +181537 |
| 3sealed | 747 | Caplan, David (1675) | Lost 1-2 | -161521 |
| 4sealed | 721 | Crepin, Philippe (1431) | Won 2-1 | +171538 |
| 5sealed | 724 | Azzoni, Emanuele (1529) | Lost 0-2 | -181520 |
| 6sealed | 717 | Montresor, Fabio (1482) | Lost 0-0 | -191501 |
| average opponent: 1524record: 2-4 | new rating: 1501 | |||
| Grand Prix Lyon 2003 (MRD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 190 | Mongilardi, Gilles (1500) | Lost 0-2 | -181482 |
| 2sealed | 427 | Santos, Nestor (1483) | Lost 1-2 | -181464 |
| 3sealed | 415 | Pelisset, Thomas (1463) | Won 2-0 | +181482 |
| 4sealed | 388 | Guyot, Anthony (1482) | Won 2-0 | +181500 |
| 5sealed | 316 | Mezhoud, Hakim (1534) | Won 2-0 | +191519 |
| 6sealed | 188 | Marmet, Olivier (1526) | Won 2-0 | +181537 |
| 7sealed | 148 | Smadhi, Hafez (1548) | Won 2-1 | +181555 |
| 8sealed | 89 | Rouze, Gilles (1574) | Lost 0-2 | -181537 |
| average opponent: 1514record: 5-3 | new rating: 1537 | |||