| event | round | table | player one | result | player two |
| Grand Prix Madrid 2004 | 3 | 4 | Costa, Nuno (1728) | Draw 1-1 | Costa, Frederico (1497) |
| Grand Prix Madrid 2004 | 10 | 26 | Costa, Nuno (1776) | Draw 1-1 | Costa, Frederico (1578) |
| Grand Prix Cardiff 2006 | 10 | 15 | Costa, Nuno (1872) | Won 2-1 | Costa, Frederico (1695) |