Diego Costa proved to be the difference three weeks ago as Atletico Madrid ran out 1 - 0 winners at the San Siro. 

Tonight, he opened the scoring in acrobatic fashion to give Atletico a 2 - 0 aggregate lead.

Goal Diego Costa - Atletico Madrid 1-0 Milan... by kiev1

Arda Turan would add another goal for Atletico while Kaka found the net for Milan as Atletico lead 3 - 1 on aggregate.