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
1979–80 S.L. Benfica season August, but Benfica postponed it four days, so they could play a friendly abroad. On the 29, Benfica won 5–1 and Jorge Gomes made his historical debut. After the 0–0 draw in Clássico on match-day 3, Benfica shared first place with Porto with five points. However, in the UEFA Cup, the campaign was disappointing, with Benfica unexpectedly losing to Aris on the first round. On the league, Benfica dropped to second after a draw with União de Leiria, but managed to recover and catch Porto on match-day 8. A week later, they beat Sporting in the Derby de Lisboa, reaching