FC Porto Nuno Valente and Derlei, Porto won the 2002–03 Primeira Liga with relative comfort, finishing 11 points ahead of second-placed Benfica. The club also won the UEFA Cup, defeating Celtic in a dramatic extra-time final, to win its second major European title. Mourinho then secured an unprecedented treble for Porto by winning the Taça de Portugal final against his previous club. The 2003–04 season began with another 1–0 win over União de Leiria, which gave the club its 13th Supertaça. Weeks later, Porto failed to repeat this result in the 2003 UEFA Super Cup, losing 1–0 to Milan. The departure of
FC Porto in international football competitions decide the match 8–7 for Porto and give the club their second and last title in this competition. Despite the managerial instability – Fernández was replaced by José Couceiro soon after their Champions League elimination – and weak performances in league matches, Porto finished runners-up to Benfica and secured qualification for the 2005–06 UEFA Champions League group stage. Dutch coach Co Adriaanse was appointed as the new coach for the 2005–06 season, and although his team delivered domestically – reclaiming both Portuguese league and Cup titles – it disappointed in the Champions League, as Porto finished last of their group,