Italian champions Juventus eased into the Champions League quarter-finals with a routine second-leg win against Portuguese league leaders Porto.
Ahead 2-0 from the first leg, Juve sealed the tie when Paulo Dybala drilled in a low penalty after Maxi Periera was sent off for handball.
Any hope the visitors had of mounting a comeback ended just before half-time when Pereira was sent off after handling the ball on the line and Dybala made no mistake from the penalty spot.
Porto had a great chance to give themselves a lifeline in the 49th minute when Francisco Soares, who has netted nine goals in seven Portuguese league games, was through one-on-one with Gianluigi Buffon, but could only curl the ball wide.
Gonzalo Higuain's effort was also just off target as Juve continued to look for a second goal.
Porto almost grabbed a late consolation on the break, but substitute Jota clipped the ball wide after being played in.