1. Wolfsburg have only won one of their last four games against Spanish teams. It was their most recent game which they won, beating Villarreal 4-1 in the return fixture of their round of 16 clash in 2009/10, for an aggreggate score of 6-3. They lost at home (2-3) and away (2-1) to Atletico Madrid in the third round of the UEFA Cup in the 1999/2000 season.
2. Madrid have been victorious in three of their last four visits to Germany, but before this spell, they had only won once in 25 games, with 18 defeats. Their record at home against Bundesliga teams is, of the 28 games played, four victories, six draws and 18 defeats. The overall record is 60 games, 28 victories, 10 draws and 22 defeats.
3. Real Madrid are one of only two teams who are yet to be beaten in this years competition, along with Barcelona. Their record away from home in this seasons competition is three wins and one draw.
4. These are the third quarter-finals of the German club in a big UEFA competition. They went through on an aggreggate score of 3-1 against Fulham in the 2009/10 Europa League (winning 1-2 away, and 1-0 at home), and they also lost to Napoli at this stage of the Europa League last season (losing 1-4 at home, and drawing 2-2 away).
5. Real Madrid, in the knockout stages of UEFA competitions against German teams, have a record of 12 victories and 8 defeats. Madrid have won the last four, scoring 22 goals.