An own goal from Iker Casillas helped Borussia Dortmund record a 1-0 away win over Porto in Thursday's Europa League last-32 tie to make it a 3-0 aggregate success for the Bundesliga side.
Hosts Porto knew they needed an early goal to boost their chances of a comeback after their first-leg loss, but were dealt a major blow halfway through the first half when Casillas gifted Dortmund the lead in unfortunate fashion.
