Manchester Utd - Bayer Leverkusen
Real Sociedad - Shakhtar Donetsk
Galatasaray - Real Madrid
FC Copenhagen - Juventus
Benfica - Anderlecht
Olympiakos - Paris SG
Bayern Munich - CSKA Moscow
Viktoria Plzen - Manchester City
Schalke 04 - Steaua Bucarest
Chelsea - Basel
Marseille - Arsenal
Napoli - Borussia Dortmund
Austria Vienna - FC Porto
Atletico Madrid - Zenit St Petersburg
AC Milan - Celtic
Barcelona - Ajax
- Manchester Utd are playing in the Champions League for the 18th consecutive season, the longest current run.
- In total, this is Manchester Utd's 19th Champions League campaign, more than any other team.
- Bayer Leverkusen are taking part in their eighth Champions League campaign. Their best performancedates back to 2002 when they reached the final only to be defeated by Real Madrid.
- Manchester Utd are unbeaten against Bayer Leverkusen in the Champions League (2 wins, 2 draws). They were nevertheless knocked out by the German side in the semi-finals of the 2001/02 campaign, winning on away goals.
- Manchester Utd are winless in their last four Champions League games (1 draw, 3 defeats).
- Manchester Utd have lost their last two Champions League games at Old Trafford (v Cluj and Real Madrid). They have never lost three in a row at home in the competition.
- Bayer Leverkusen are winless in their last 12 games away from home in the Champions League (3 draws, 9 defeats). Their last away win was in October 2002 against Maccabi Haifa.
- Bayer Leverkusen have won none of their seven Champions League away games against English clubs, losing six (5 goals for, 17 against).
- The last five German clubs who have travelled to Old Trafford to face Manchester Utd in the Champions League have all been defeated.
- Ryan Giggs has played 134 Champions League games, the most among players in this season'scompetition. Only Raul has more (142).
Real Sociedad - Shakhtar Donetsk
- This will be the first competitive meeting between the two sides.
- Real Sociedad are taking part in their second Champions League campaign, after 2003/04 when they reached the last 16 before being knocked out by Lyon.
- Real Sociedad have won none of their last six Champions League games (3 draws, 3 defeats).
- Shakhtar are making their ninth appearance in the Champions League, only Dynamo Kiev have made more among Ukrainian sides (14).
- Shakhtar have won only four of their last 16 Champions League games.
- Shaktar's best performance in the Champions League was a quarter-final in 2010/11 - they were then knocked out by Barcelona.
- Real Sociedad's four Champions League home games have only produced four goals (1 win, 2 draws, 1 defeat).
- Shakhtar Donetsk have conceded 12 goals in their four Champions League games played in Spain (1 win, 3 defeats).
- Shakhtar Donetsk have played 54 games in the Champions League but have never had a goalless draw.
Galatasaray - Real Madrid
- Real Madrid have lost by a 3-2 scoreline on both occasions when they have played away against Galatasaray in the Champions League.
- Real Madrid have never won in Turkey in European competition (1 draw, 2 defeats).
- Galatasaray's last CL game was a home win against Real Madrid (3-2 in April).
- Galatasaray are taking part in their 12th Champions League campaign, the most among Turkish sides.
- Galatasaray have only lost one of their last eight Champions League games (5 wins, 2 draws).
- Real Madrid are playing in the Champions League for the 17th consecutive season, only Manchester Utd can boast a longer current run. They have always made it out of the Champions League group stages.
- Real Madrid last reached the final of the Champions League 11 years ago when they beat Bayer Leverkusen (2-1 in 2002).
- Real Madrid have won the European Cup/Champions League on nine occasions, a record.
- Real Madrid have been knocked out at the semi-final stage in each of the last three Champions League campaigns.
- Real Madrid have scored in each of their last 25 Champions League games, the longest current run. The last time they failed to find the net was against Barcelona in April 2011.
- Real Madrid have won more games than any other club in the history of the Champions League (105, since 1992/93).
- Real Madrid have conceded seven goals in their last two Champions League away games (3 v Galatasaray and 4 v Borussia Dortmund).
- Didier Drogba has netted 40 goals in the Champions League, only Lionel Messi (59) and Cristiano Ronaldo (50) have been more prolific among players in this season's competition.
- Real Madrid is Carlo Ancelotti's sixth club in the Champions League (after Parma, Juventus, AC Milan, Chelsea & Paris SG), more than any other manager.
FC Copenhagen - Juventus
- This will be the first competitive meeting between the two sides.
- FC Copenhagen are taking part in their third Champions League campaign, more than any other Danish side. Their best performance dates back to 2010/11 when they reached the last 16 only to be knocked out by Chelsea.
- Copenhagen have lost one of their last seven Champions League home games (4 wins, 2 draws).
- Copenhagen have failed to score in 50% of their Champions League games (7 out of 14).
- Copenhagen have won only one of their last six Champions League games (2 draws, 3 defeats).
- Copenhagen have conceded 12 goals in four games against Italian sides in European competition, qualifiers included (1 win, 3 defeats).
- Juventus' only previous meeting with a Danish club in the Champions League group stages was against Nordsjaelland last season. They drew in Denmark (1-1) before winning 4-0 in Turin.
- Juventus are making their 14th appearance in the Champions League. Only AC Milan have made more appearances among Italian sides (17).
- Juventus have won the European Cup/Champions League on two occasions (1985 and 1996). Only Benfica and Bayern Munich have lost as many finals as the Old Lady (5).
- Juventus have picked up the most red cards in the Champions League: 19 (since 1992/93).
Benfica - Anderlecht
- Benfica have won the European Cup/Champions League on two occasions, in 1961 and 1962. Only Bayern Munich and Juventus have lost as many finals as the Lisbon side (5).
- However, Benfica have never made it any further than the quarter-finals of the Champions League since 1992/93.
- Only Porto (18) have played more Champions League campaigns than Benfica (9) among Portuguese sides.
- Benfica and Anderlecht's only previous meeting in the Champions League was back in the group stages of the 1994/95 season. The Lisbon side won 3-1 at home before a draw in Brussels (1-1).
- Benfica have never scored more than two goals in their last 18 Champions League games.
- Anderlecht are making their 10th appearance in the Champions League, more than any other Belgian side.
- No Belgian side has ever made it past the group stages of the Champions League.
- Anderlecht have won only two of their last 25 Champions League games (6 draws, 17 defeats).
- Anderlecht have lost on their two previous trips to Portugal in the Champions League (1 goal for, 5 against).
Olympiakos - Paris SG
- This will be the first competitive meeting between the two sides.
- Olympiakos are making their 15th appearance in the Champions League, more than any other Greek side.
- None of Olympiakos' last 15 Champions League games have ended in a draw (7 wins, 8 defeats).
- Olympiakos have won their last three Champions League games against French opposition (v Marseille in 2011/12 and twice v Montpellier last season).
- Paris SG are unbeaten in their last eight Champions League games, the longest current run. They have never failed to score during that sequence.
- PSG have won their three previous away games against Greek clubs (8 goals for, 0 against).
- PSG have not conceded a single goal in seven games against Greek opposition (6 wins, 1 draw).
- PSG have won 50% of their Champions League games (22 out of 44), the best ratio by a French team in the competition.
- Zlatan Ibrahimovic has netted 31 goals in the Champions League, only Lionel Messi (59), Cristiano Ronaldo (50) and Didier Drogba (40) have been more prolific among players in this season's competition.
- Ezequiel Lavezzi has scored five goals in his last six Champions League games.
- Laurent Blanc has won 62.5% of games in the Champions League as manager (10 out of 16). Only Jupp Heynckes ( 67.6%) has a better ratio among managers with at least 10 games under their belt.
Bayern Munich - CSKA Moscow
- This will be the first competitive meeting between the two sides.
- Bayern Munich have reached the Champions League final three times in the last four seasons.
- Bayern Munich won their fifth European Cup/Champions League last season. Only Real Madrid (9) and AC Milan (7) have been more successful.
- Bayern Munich have won their last five Champions League games (13 goals for, 1 against).
- This is the 16th time in 17 seasons that Bayern Munich will play in the Champions League, the only exception being in 2007/08.
- CSKA Moscow are taking part in their seventh Champions League campaign. Their best performance is reaching the quarter finals back in 2009/10 before being knocked out by Inter Milan.
- CSKA have only won two of their last 10 Champions League games (3 draws, 5 defeats).
- Bayern Munich are unbeaten against Russian opposition in the Champions League (5 wins, 3 draws).
- CSKA Moscow have won only four of their 21 away games in the Champions League. They have lost on their two trips to Germany, conceding three goals on each occasion (v Hamburg and Wolfsburg).
- CSKA Moscow striker Seydou Doumbia has netted five goals in seven Champions League games.
- Pep Guardiola has lost only two of his 24 Champions League home games as manager. One of his two defeats was against a Russian side (Rubin Kazan, October 2009).
Viktoria Plzen - Manchester City
- This will be the first competitive meeting between the two sides.
- Czech sides have never won against English opposition in the Champions League (3 draws, 7 defeats).
- Czech sides have only won two of their last 26 games in the Champions League (8 draws, 16 defeats).
- Viktoria Plzen are taking part in their second Champions League campaign, only Sparta Prague have done better among Czech sides (7).
- Plzen won only one of their six games in their only Champions League campaign to date (2 draws, 3 defeats).
- Manchester City are taking part in their third Champions League campaign. They have never made it past the group stages.
- Manchester City have won only three of their 12 Champions League games.
- Manchester City have lost five of their six away games in the Champions League, the only exception being a 3-0 victory at Villarreal.
- Manchester City didn't win a single game in the Champions League group stages last season (3 draws, 3 defeats).
- Manuel Pellegrini has won only five of his 20 Champions League games away from home as manager. Manchester City are his fourth club in the competition after Villarreal, Real Madrid and Malaga.
Schalke 04 - Steaua Bucarest
- Schalke will be playing in the Champions League for the sixth time in their history. Their best ever performance in the competition is reaching the semi-finals in 2010/11.
- Schalke have only won one of their last five home games in the Champions League.
- Schalke have never failed to score in their last nine Champions League games.
- Steaua Bucarest are taking part in their seventh Champions League campaign, more than any other Romanian side.
- Steaua have won only four of their 36 Champions League games (11%), the worst ratio among the 32 teams entered for the 2013/14 campaign.
- Steaua are winless in their last 17 Champions League games (4 draws, 13 defeats), their last victory in the competition dating back to September 2006 against Dinamo Kiev.
- Steaua have never gone past the group stages of the Champions League.
- Schalke are unbeaten in their four competitive encounters with Romanian clubs (3 wins, 1 draw).
- Schalke and Steaua Bucarest's only previous meeting was in the group stages of the 2011/12 Europa League. The Gelsenkirchen side won at home (2-1) after a goalless draw in Romania.
- No Romanian side has ever beaten German opposition in the Champions League (2 draws, 8 defeats).
Chelsea - Basel
- This is Chelsea's 11th consecutive participation in the Champions League. They've reached the semi-finals six times and the final twice, winning it for the first time in their history in 2012.
- Basel are taking part in their fifth Champions League campaign, more than any other Swiss side. Their best performance is reaching the last 16 back in 2011/12 before being knocked out by Bayern Munich.
- Chelsea and Basel's only previous meeting was in the semi-finals of the Europa League last season. The Blues won both games (2-1 in Basel and 3-1 in London).
- Chelsea are unbeaten in their last 29 games at Stamford Bridge in the Champions League group stages (22 wins, 7 draws). Their last defeat was 10 years ago against Besiktas (October 2003).
- Basel have won only three of their 16 Champions League games away from home (5 draws, 8 defeats).
- Basel have conceded 40 goals in 16 Champions League away games and only kept one clean sheet (v Spartak Moscow, November 2002).
- Jose Mourinho won 48.5% of his Champions League games as Chelsea manager (16 out of 33). His ratio with Real Madrid was 66.7%.
- Mourinho is one of four managers to have won the European Cup/Champions League with two different clubs, alongside Ernst Happel, Ottmar Hitzfeld and Jupp Heynckes.
- Samuel Eto'o has netted 27 goals in the Champions League, which makes him the second top African scorer in the competition behind Didier Drogba (40).
- Oscar has scored four goals in three Champions League games played at Stamford Bridge.
Marseille - Arsenal
- Arsenal are unbeaten in their 10 away games against French opposition (6 wins, 4 draws). They have actually won each of their last five away matches versus French clubs.
- Marseille have only won one of their last nine Champions League games against English opposition (v Chelsea, December 2010).
- Marseille have only scored seven goals in 14 Champions League games against English clubs and never more than one in a game.
- Arsenal and Marseille's two competitive encounters have produced only one goal: a 1-0 win for the Gunners at the Vélodrome before a goalless draw at the Emirates in the 2011/12 Champions League group stages.
- Marseille have lost their last three Champions League games.
- Marseille have failed to score in five of their last eight Champions League games.
- Arsenal have only kept two clean sheets in their last 24 Champions League games away from home, one of those games being at Marseille's Vélodrome stadium (October 2011).
- This is the 16th consecutive season Arsenal will play in the Champions League, only Manchester Utd (18) and Real Madrid (17) can boast longer current streaks.
- Arsenal have made it past the group stages in the last 10 seasons but have been knocked out at the last 16 stage in the last three campaigns.
- Their solitary Champions League final ended in defeat against Barcelona in 2006.
- Arsène Wenger has taken charge of 152 games in the Champions League, more than any other current manager. Only Alex Ferguson has more (190).
- Elie Baup won three of his 12 Champions League games as Bordeaux manager.
Napoli - Borussia Dortmund
- This will be the first competitive meeting between the two sides.
- Napoli are taking part in their second Champions League campaign after 2011/12 when they reached the last 16 before being knocked out by Chelsea.
- Napoli have never failed to score in the Champions League (8 games).
- Napoli are unbeaten at home in the Champions League (3 wins, 1 draw).
- Napoli are winless in their last seven encounters with German opposition in European competition (2 draws, 5 defeats).
- Borussia Dortmund are making their ninth appearance in the Champions League, only Bayern Munich have more among German clubs (17).
- Borussia Dortmund won their one and only Champions League in 1997.
- Dortmund have won only one of their last 10 Champions League games played outside the Westfalen stadion (4 draws, 5 defeats), that was against Ajax at the Amsterdam Arena last season.
- Rafael Benitez has won 53% of Champions League games as manager (44 out of 83).
- Only Cristiano Ronaldo (12) scored more goals than Robert Lewandowski (10) in the Champions League last season.
- Napoli striker José Callejón has scored seven goals in nine Champions League games.
Austria Vienna - FC Porto
- Austria Vienna are the only team making their debut in the Champions League among the 32 participants in the 2013/14 campaign.
- The only previous team from Vienna to have taken part in the Champions League were Rapid. They didn't manage a single win (12 games).
- Austrian teams are on a run of eight consecutive defeats in the Champions League (Sturm Graz + Rapid Vienna).
- Qualifiers excluded, Austria Vienna have only won four of their last 24 games in European competition (6 draws, 14 defeats).
- Austria Vienna and FC Porto's only previous meeting was back in the 2002/03 UEFA Cup. Porto won both games without conceding a goal (1-0 in Austria; 2-0 in Portugal).
- Porto have qualified for their 18th Champions League campaign (since 1992/93), only Manchester Utd have done better (19).
- Porto have won the European Cup/Champions League on two occasions: 1987 & 2004.
- Porto have kept seven clean sheets in their last 10 Champions League games.
- Porto have lost five of their last eight Champions League games away from home (2 wins, 1 draw).
Atletico Madrid - Zenit St Petersburg
- This will be the first competitive meeting between the two sides.
- Atletico Madrid are taking part in their fourth Champions League campaign, their first since 2009/10.
- Atletico's best performance in the Champions League was reaching the quarter finals back in 1996/97.
- Atletico Madrid have failed to win any of their last 9 Champions League games (6 draws, 3 defeats). Their last victory in the competition dates back to November 2008 (v PSV Eindhoven).
- Atletico Madrid have lost their two home encounters with Russian sides in European competition: versus Spartak Moscow in the 1972/73 Cup Winners' Cup (3-4) and Rubin Kazan in the 2012/13 Europa League (0-2).
- Zenit are taking part in their fourth Champions League campaign - they have never gone further than the last 16 (2011/12).
- Zenit have won none of their last five competitive encounters with Spanish sides (1 draw, 4 defeats).
- Zenit have won only two of their 10 Champions League games away from home (2 draws, 6 defeats). They have failed to score in six of these games.
AC Milan - Celtic
- Celtic have lost 22 of their 24 away games in the Champions League (1 win, 1 draw). Their only win on the road was against Spartak Moscow in last season's group stages.
- Celtic have lost their three away games against AC Milan in the Champions League.
- AC Milan have won only eight of their last 31 Champions League games.
- Max Allegri's men have won only one of their last five Champions League games at the San Siro. That was against Barcelona last season (2-0).
- AC Milan have won the European Cup/Champions League on seven occasions, only Real Madrid have more to their name (nine).
- AC Milan have had the most 0-0 draws in Champions League history (21 since 1992/93).
- Celtic won the European Cup/Champions League final the only previous time it was held in Portugal (1967).
- Celtic are making their eighth appearance in the Champions League, only Rangers have made more (10) among Scottish clubs.
- Celtic's best Champions League performance is a last 16 in 2006/07, 2007/08 and 2012/13.
Barcelona - Ajax
- This will be the first competitive meeting between the two sides.
- Barcelona have reached the semi-finals of the Champions League in each of the last six seasons, the longest run in the history of the competition.
- Barcelona have won none of their last 4 Champions League games (2 draws, 2 defeats), their worst run since 2001/02.
- Ajax are making their 12th appearance in the Champions League (since 1992/93). Only PSV Eindhoven have qualified for the competition more times amongst Dutch sides (13).
- Ajax have won the European Cup/Champions League four times (1971, 1972, 1973, 1995), more than any other Dutch side.
- Ajax have lost their last eight games against Spanish opposition in European competition.
- Ajax have never kept a clean sheet in their last seven Champions League games, conceding 19 goals in the process.
- Ajax have won only one of their last eight Champions League games (at home v Manchester City last season).
- Lionel Messi has netted 59 goals in the Champions League, only Raul (71) has more goals to his name in the competition.