Champions League Opta Facts| Quarter Final (First Leg)
UEFA Champions League - Quarter Final (First Leg)
Barcelona v Atletico Madrid
Barcelona have not lost a match in the Champions League quarter finals since April 2003, winning eight and drawing six of their games at this stage since.
Barcelona have won just two of their previous six Champions League matches against fellow Spanish sides (W2 D2 L2).
Atletico Madrid have won seven, drawn one and lost none of their eight matches in the Champions League so far this season - no side has won more CL games this season.
Atletico have conceded only four goals in their eight Champions League games this season; no side in the competition have conceded fewer.
Atletico Madrid have won their last three European matches against fellow Spanish sides; all in the 2011-12 Europa League and including their 3-0 victory over Athletic de Bilbao in the final.
This is the furthest that Atletico have progressed in the Champions League, while Barcelona will be appearing in the quarter finals of the Champions League for the 12th time.
Diego Costa has scored seven goals in five Champions League appearances this season and is already Atletico's top scorer in CL history.
Lionel Messi has scored 67 goals in 84 Champions League appearances (excl. quals) - the only player to have scored more CL goals in Raul (71 in 142 apps).
Messi has scored in five successive Champions League appearances (eight goals) for the first time in his career (excl. qualifiers).
Barcelona have seen their opponent reduced to 10 men in four of their last seven Champions League matches.
Overall in CL history, Barcelona have seen 27 red cards given to opponents; nine more than any other side in the competition.
Atletico Madrid have played the most games in Champions League history (excl. qualifiers) without having been given a red card (30).
Manchester United v Bayern Munich
Manchester United have kept a clean sheet in five of their eight Champions League games this season; no side has kept more.
Since the 1999 Champions League final, Man Utd have won just one of their six Champions League encounters with Bayern Munich (W1 D2 L3).
However, Manchester United have won their last five Champions League matches against German opposition, two of which came against Bayer Leverkusen this season.
United have scored in each of their last 14 Champions League meetings with German clubs, but the last one to stop them scoring was Bayern in March 2002.
Bayern have won six and drawn one of their last seven matches in the CL knockout stages, but the last team to defeat them in the KO stages were English (Arsenal - 0-2 in March 2013).
Bayern have managed the highest average possession figure in the CL this season so far (69.3%).
The Red Devils have won all four of their Champions League games at Old Trafford this season, keeping a clean sheet in each of the last three.
Bayern Munich have won seven successive Champions League away games and are unbeaten in their last nine away in the competition (W8 D1).
Bayern have only failed to score in one of their last 27 Champions League matches, but this came against English opposition (Arsenal in March 2013).
Bayern have attempted the most shots at goal (117) and on target (65) in the Champions League so far this season.
No side has won more penalties than Bayern Munich in the Champions League this season (4), but they have only scored two of these.
Arjen Robben has won all four of these penalties - no other player has won more than two.
Franck Ribery has created more goalscoring chances than any other player in the Champions League this season (21).
Paris St Germain v Chelsea
Chelsea have played PSG twice in Europe before this season and have kept a clean sheet in both matches (excl. qualifiers).
Chelsea lost their only previous knockout tie against a French side in the Champions League (v Monaco in 2003-04).
Chelsea have conceded only two goals in their last seven Champions League matches.
Fernando Torres has averaged a goal every 157 minutes for Chelsea in European competition (15 in 34 apps).
Chelsea have not conceded a first half goal in any of their last nine Champions League matches.
Zlatan Ibrahimovic has already scored 10 goals in seven Champions League appearances for PSG this season; his best return in a single CL season.
Paris St Germain have lost just one of their last 16 Champions League matches (W11 D4 L1).
No side has scored with a higher proportion of their shots than PSG (28.2%) this season in the CL.
Chelsea have kept a clean sheet in five of their eight CL games this season; a competition-high alongside Man Utd.
Paris St Germain have scored in 16 successive Champions League matches, netting at least twice in 12 of these games.
Real Madrid v Borussia Dortmund
Real Madrid come in to this match on the back of a nine game unbeaten run in the Champions League (W8 D1). The last CL game they lost was the SF first leg in Dortmund last April.
It's been nearly three years since Real Madrid failed to score in a Champions League game (27/04/2011 v Barcelona) and they have scored in 33 successive CL matches.
Dortmund have lost only one of their last five Champions League meetings with Real Madrid (W2 D2 L1), but this defeat was away in the Bernabeu last season (0-2).
Dortmund have won their last three Champions League quarter final ties, including a victory over Spanish side Malaga last season (3-2 on aggregate).
Robert Lewandowski has scored five goals in his last four Champions League appearances against Real Madrid; more often than against any other opponent.
Polish striker Lewandowski has scored or assisted 20 (50%) of Borussia Dortmund's 40 goals in the Champions League since the start of last season.
Of sides left in the competition, Real Madrid have let their opponents have the most shots on target (41).
Cristiano Ronaldo has already netted more goals this season (13) than ever before in a single CL campaign. The record for goals within a single CL campaign is 14 by Lionel Messi in 2011-12 (excl. qualifiers).
Ronaldo has scored 48 goals and assisted 11 more in 47 Champions League appearances for Real Madrid.
Ronaldo has attempted the most shots at goal (41) and on target (27) in the Champions League this season.