Costa, Joaquim
Current rating: 1519
Record: 3-2
| Grand Prix Porto 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 40 | Madeira, Ricardo (1500) | Won 2-0 | +181518 |
| 2sealed | 114 | Pereira, Joao (1518) | Lost 0-1 | -181500 |
| 3sealed | 220 | Amaro, Rui (1500) | Won 2-0 | +181518 |
| 4sealed | 92 | Carapinha, Nono (1519) | Won 0-0 | +181536 |
| 5sealed | 43 | Chan, Tiago (1572) | Lost 0-2 | -171519 |
| average opponent: 1522record: 3-2 | new rating: 1519 | |||