Guerreiro, Joao
Current rating: 1518
Record: 8-7
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 15 | Rus, Tine (1731) | Won 2-0 | +211576 |
| 3sealed | 1 | McGovern, Mark (1492) | Lost 0-2 | -191557 |
| 4sealed | 193 | Duivesteijn, Mikel (1432) | Lost 1-2 | -201537 |
| 5sealed | 215 | Soderqvist, Joakim (1523) | Lost 0-2 | -191518 |
| 6sealed | 218 | Simoes, Duarte (1486) | Won 2-1 | +181536 |
| 7sealed | 174 | Campos, Alberto (1565) | Lost 1-2 | -181518 |
| average opponent: 1538record: 2-4 | new rating: 1518 | |||
| Grand Prix Lisbon 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 162 | Marques, Hugo (1520) | Lost 0-2 | -181482 |
| 2sealed | 255 | Gracio Diniz, Joaa Man (1482) | Won 2-0 | +181500 |
| 3sealed | 136 | Simoes, Joao (1501) | Won 1-0 | +181518 |
| 4sealed | 80 | Viola, Paulo (1464) | Won 2-0 | +171535 |
| 5sealed | 60 | Wisbey, Will (1521) | Won 2-0 | +181553 |
| 6sealed | 31 | Barros, Antonio Maria (1555) | Won 2-0 | +181571 |
| 7sealed | 14 | Vazquez, Moises (1573) | Lost 0-2 | -181553 |
| 8sealed | 28 | Perez Saez, Enrique (1552) | Won 2-1 | +181571 |
| 9sealed | 23 | Nessler, Michael (1687) | Lost 0-2 | -161555 |
| average opponent: 1540record: 6-3 | new rating: 1555 | |||