Amaral, Joao
Current rating: 1513
Record: 7-6
| Grand Prix Lisbon 2005 (BOK limited) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 234 | Amorim, Goncalo (1500) | Lost 0-2 | -191537 |
| 2sealed | 158 | Monteiro, Hugo (1482) | Lost 1-2 | -191518 |
| 3sealed | 247 | Pinto, Carlos (1404) | Won 2-0 | +161534 |
| 4sealed | 167 | Ibanez, Juan Manuel (1481) | Won 2-0 | +171551 |
| 5sealed | 133 | Santos, Helder (1515) | Lost 0-2 | -191532 |
| 6sealed | 183 | Casanova, Gonzalo (1482) | Lost 0-2 | -191513 |
| average opponent: 1477record: 2-4 | new rating: 1513 | |||
| Grand Prix Porto 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 131 | Gomes, Manuel (1500) | Won 1-0 | +181518 |
| 2sealed | 11 | Carvalho, Marcio (1518) | Lost 0-2 | -181500 |
| 3sealed | 127 | Ferreira, Bruno1 (1500) | Won 2-0 | +181518 |
| 4sealed | 104 | Lopes, Jose (1518) | Won 0-0 | +181536 |
| 5sealed | 51 | Minton, Patrick (1640) | Lost 0-2 | -161520 |
| 6sealed | 116 | Pires, Rui (1519) | Won 2-1 | +181538 |
| 7sealed | 67 | Urgueira, Andre (1536) | Won 2-0 | +181556 |
| average opponent: 1533record: 5-2 | new rating: 1556 | |||