Guilherme Sesso, Bonella
Current rating: 1519
Record: 5-4
| Grand Prix Sao Paulo 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 79 | Rovtar Pinton, Vinicius (1500) | Won 2-1 | +181518 |
| 2sealed | 85 | Martins, Mateus (1539) | Won 2-1 | +181536 |
| 3sealed | 61 | Torres Barros, Walter (1519) | Lost 0-2 | -181518 |
| 4sealed | 200 | Ramos Modesto, Danilo (1563) | Lost 0-2 | -171501 |
| 5sealed | 171 | Huesser, Octavio (1500) | Won 2-0 | +181519 |
| 6sealed | 147 | Fagundes, Josejane (1501) | Lost 1-2 | -181501 |
| 7sealed | 172 | Castro, Juan Manuel (1511) | Lost 1-2 | -181483 |
| 8sealed | 156 | Estevam, Wesley (1482) | Won 2-0 | +181501 |
| 9sealed | 133 | Vitoria Bastos Rios, Jessica (1504) | Won 2-0 | +181519 |
| average opponent: 1513record: 5-4 | new rating: 1519 | |||