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
2002–03 S.L. Benfica season Setúbal on 5 October, dropping two points in a 1–1 draw, due to a "childish error, or better yet, a lack of sharpness of the back-four", in the words of Ricardo Tavares from "Record". On 20 October, Benfica met Porto in Estádio das Antas for the "Clássico". It was an intense match, with 3 ejections and 73 fouls. Porto won 2–1 because to António Tadeira, they "reacted better to playing outnumbered, while Benfica lost their focus when Paulo Costa sent off Éder and then Miguel". Six days later, for the final game of the month, Benfica played Académica at home.