#3 Ronaldo v FC Porto - 2009
Many Manchester United fans will never forget the days of Cristiano Ronaldo wearing the famous Manchester red shirt throughout his six-year spell at the English football club.
His career at United is where it all kicked off for the Portuguese striker.
Especially in his last couple of seasons at Old Trafford where he would play a big part of helping United win their third ever European Cup in 2008.
Sadly Ronaldo's last ever game in a United shirt was losing out to Lionel Messi's Barcelona in Rome in the 2009 Champions League final.
In United's path to the 2009 final, United would travel to Ronaldo's homeland to face FC Porto.
After the first leg in Manchester, the scoreline was 2-2 with FC Porto taking the lead on away goals.
All Fergie's men had to do was score one goal and not concede throughout the 90 minutes.
And they did just that thanks to Mr Ronaldo!