Iker Casillas Fernández An error from Iker Casillas consigned Porto to defeat at Vitoria Guimaraes on Saturday but Spain boss Vicente del Bosque defended him.
Porto's hopes of winning the Primeira Liga are over after they were held by Belenenses and Benfica drew with Vitoria Guimaraes.
Sporting Sporting Lisbon missed out on the chance to go two points clear at the top of the Primeira Liga in a goalless draw with Nacional on Saturday.
Vitória Guimarães Vitoria Guimaraes have extended their 100 per cent start to the Primeira Liga season by beating Belenenses 3-0 with 10 men.
Benfica Benfica re-established a six-point lead at the top of the Primeira Liga with a 3-0 win at 10-man Penafiel on Sunday.
Gil Vicente Gil Vicente's torrid start to the 2014-15 Primeira Liga campaign continued as they succumbed to a late goal in going down 3-2 at Boavista.
Benfica Benfica stretched their winning run to eight Primeira Liga matches with a 3-0 win over Vitoria Guimaraes to stay six points clear of Porto.
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