Roma has never been beaten Porto in European competition. They were eliminated by the Portuguese side in both previous two-legged encounters.
Roma has reached the knockout stages of the Champions League for the seventh time in their last eight participations. They won all three of their home games in the knockout phase last season, on their way to the semi-finals.
Porto is unbeaten in their last five Champions League games away from home. Porto’s last six games went away without a defeat in the 2003/04 campaign and they won the trophy.
This will be the first competitive encounter between Manchester Utd and PSG. No French team has ever beaten Manchester Utd away from home in European competition.
Manchester Utd has only won one of their last nine Champions League knockout games, which was against Olympiakos in March 2014.
PSG have reached the Champions League knockout stages for the seventh consecutive season, the longest run after Real Madrid, Barcelona, and Bayern Munich.