Juventus - Celtic
Juventus and Celtic have met five times in the past, with three wins for the Italian club and two for the Hoops.
Juventus have lost only one of their last 20 Champions League games at home (1-4 v Bayern Munich, December 2009), winning 13 and drawing six. They have kept clean sheets in 13 of those games.
Celtic have never won an away game in Italy (six defeats, three draws).
No side has ever overturned a 3-0 deficit at home in the first-leg in the history of the Champions League.
The last three competitive encounters between Celtic and Juventus have produced 15 goals.
Juventus are unbeaten in the Champions League this season, having produced three draws followed by four wins.
Juventus haven't conceded a goal in their last 400 minutes in the Champions League, the longest run in the competition this season.
In the first leg, Celtic had the most shots (17) and their highest possession ratio (53.4%) in the Champions League this season and yet suffered their heaviest defeat of the 2012/13 campaign.
Celtic have the joint-worst defensive record among the 16 teams left in the Champions League this season (11 goals conceded, alongside Arsenal).
Georgios Samaras has scored in each of his three away games in the Champions League this season.
Paris SG - Valencia
PSG became the first French team to beat Valencia at Mestalla in the first leg.
PSG also ended Valencia's unbeaten run of 17 games against French clubs.
No French club has ever kept a clean sheet against Valencia in European competition (19 games).
PSG have won their last five Champions League games, the best run currently. It's PSG's longest streak in the competition since 1994/95.
PSG are unbeaten at home in their last 22 games in European competition, qualifiers included (15 wins, 7draws). Their last defeat dates back to 23 November 2006 in the group phase of the UEFA Cup, against Hapoel Tel-Aviv (2-4).
PSG have won 15 of their last 20 home games in the Champions League (75%). Only Monaco (76%) have a better ratio among teams with at least 10 home games in the competition.
PSG have conceded only four goals in seven Champions League games this season, the joint-best defensive record in the competition.
All 16 of PSG's goals in the Champions League this season have been scored from inside the box.
Ezequiel Lavezzi has scored four goals in his last three Champions League games. He's PSG's top scorer in the competition this season.
Borussia Dortmund - Shakhtar Donetsk
Borussia Dortmund are one of three teams unbeaten in the Champions League this season with Juventus and Schalke.
No Ukrainian team has ever beaten Borussia Dortmund in European competition (including qualifiers) (five losses, two draws).
Borussia Dortmund have won all three of their home games in the Champions League this season, conceding only one goal.
Shakhtar Donetsk have only lost once in their four trips to Germany in European competition (two wins, one draw), against Eintracht Frankfurt (0-3) in UEFA Cup in October 1980.
This is only the second time Shakhtar have reached the knockout stages of the Champions League after 2010/11 when they were eventually knocked out in the quarter-finals.
Shakhtar are unbeaten in their last five encounters with German clubs in European competition (three wins, two draws).
11 of Shakhtar's last 12 goals in the Champions League have been scored by Brazilian players (Texeira (2), Fernandinho (1), Willian (4), Luiz Adriano (3), Douglas Costa (1)).
Shakhtar have scored in 11 of their last 12 away games in European competition (23 goals overall).
Mario Götze is involved in four of Dortmund's last six goals in the Champions League (one goal, three assists).
Shakhtar's Fernandinho has completed the most dribbles in the Champions League this season (27).
All three of Marco Reus' Champions League goals this season have came away from home for Borussia Dortmund.
Of the teams left in the competition only Celtic (66.0%) have a worse passing accuracy in the opposition's half than Borussia Dortmund (71.9%).
Manchester Utd - Real Madrid
Real Madrid are one of two Spanish teams to have beaten Manchester United at Old Trafford in the Champions League (Deportivo La Coruña won 3-2, 19 April 2000).
The Red Devils have only lost once in their last 14 Champions League home games (nine wins, four draws), the last one against CFR Cluj during the group stage this season.
The two Champions League encounters between Manchester Utd and Real Madrid at Old Trafford have produced 12 goals.
Lyon were the last team to knock Real Madrid out at the last 16 stage in the Champions League, back in 2009/10 (0-1, 1-1).
Manchester United have conceded three goals in each of their two home games against Real Madrid in the Champions League.
Real Madrid have only won once in their last five away games in England in the Champions League (two draws, two defeats), against Tottenham at White Hart Lane in April 2011.
Real Madrid have only failed to score once in their last 32 Champions League games, against Barcelona in Santiago Bernabeu in April 2011.
Real Madrid have failed to keep a clean sheet in the Champions League this season (10 goals conceded).
Manchester United have had their woodwork rattled six times, the most of any side in the tournament this season.
Real Madrid have had the most shots in this season's Champions League (154, that's 56 more than Manchester Utd).
Alex Ferguson has only won twice in his 15 competitive encounters against José Mourinho (seven draws, six defeats).
Only Didier Drogba has scored more headed goals (8) than Cristiano Ronaldo (7) in the Champions League since 2003/04.
Angel Di Maria's four assists in CL 2012/13 have all been delivered against Manchester teams (3 against City, 1 against United).
Cristiano Ronaldo has scored seven goals in 23 Champions League games at Old Trafford. He has 16 goals in 18 games at the Bernabeu.
Week 2
Malaga - PortoPorto are unbeaten in their last eight Champions League games against Spanish opposition (four wins, four draws). Real Madrid are the last Spanish side to beat Porto in Europe's premier competition, in October 2003.
Malaga have only lost two of their 25 games in European competition, qualifiers included. Both those defeats were in Porto: against Boavista back in March 2003 (UEFA Cup quarter-finals) and FC Porto in the first-leg.
Malaga are winless in their last four Champions League games, the longest current drought among the teams still left in the competition.
Malaga only had two shots in the first leg against Porto, the fewest attempts in a Champions League game this season.
Porto have conceded only four goals in seven games, the best defensive record in the Champions League this season alongside Juventus and PSG.
Porto have kept the most clean sheets in the Champions League this season (5).
Malaga are the only team yet to concede a first-half goal in the Champions League this season.
Porto last reached the quarter finals of the Champions League in 2008/09.
Porto have won none of their last six away games the Champions League knockout stages, their last win on the road dating back to the semi-finals in May 2004 against Deportivo La Coruna.
Bayern Munich - Arsenal
Bayern Munich are the top scorers in this season's Champions League (18 goals).
The only English team to beat Bayern Munich away from home in Europe (penalties excluded) are Norwich City, back in October 1993 (UEFA Cup).
Bayern Munich have won all three of their home games in the competition this season (12 goals, three conceded).
Bayern Munich have never lost by more than two clear goals at home in the Champions League.
Arsenal have only ever won once in Germany in the Champions League despite travelling there eight times. It was in September 2006 against Hamburg (2-1).
Arsenal have lost their two previous away games against Bayern Munich (one goal scored, four conceded).
Arsenal and Bayern Munich have met five times in the Champions League, with the Bavarians winning three times, Arsenal once and the other one ending in a draw.
Bayern Munich have scored in each of their last 13 Champions League games, the last team to stop them from netting being Basel in February 2012.
Arsenal have only kept one clean sheet in their last 23 Champions League games away from home.
Arsenal have the joint-worst defensive record among the 16 teams left in the Champions League this season (11 goals conceded, alongside Celtic).
Arsenal have had the fewest shots among the 16 teams left in the Champions League this season (57).
Bayern Munich have attempted the most crosses in the Champions League this season (217). All three of their goals in the first leg against Arsenal came from crosses.
Bayern Munich have had 10 different goalscorers in the Champions League this season, more than any other side.
Only Zlatan Ibrahimovic (5) has delivered more assists than Olivier Giroud and Philipp Lahm (4) in the Champions League this season.
Lukas Podolski has scored four goals from four shots on target in the Champions League this season.
Schalke - Galatasaray
Schalke are one of three teams unbeaten in the Champions League this season with Borussia Dotrmund and Juventus.
Galatasaray hadn't reached the knockout stages of the Champions League since 2000/01 when they were knocked out by Real Madrid in the quarter-finals.
Schalke have reached the knockout stages of the Champions League for the third time after 2007/08 and 2010/11. Both times, they made it at least to the quarter-finals.
Galatasaray are unbeaten in their last five Champions League games (three wins, two draws).
Galatasaray have won their last two away games in the Champions League (against Cluj and Braga).
Galatasaray have failed to keep a clean sheet in their last 11 away games in the Champions League.
Schalke are unbeaten against Turkish opposition (two wins, three draws).
Schalke have drawn the most games in this season's Champions League (4).
Schalke have never failed to score in the Champions League this season.
Galatasaray have scored only eight goals in seven Champions League games this season, the lowest among the 16 teams still left in the competition.
Burak Yilmaz has scored seven of Galatasaray's eight goals in the Champions League this season. He is the joint-top scorer in the competition with Cristiano Ronaldo.
Barcelona - AC Milan
The last time Barcelona exited the Champions League at the last 16 stage was in 2006/07. It was against Liverpool.
Barcelona have failed to score in their last two Champions League games for the first time since April 2008.
Barcelona have failed to keep a clean sheet in their last six knockout games in the Champions League at Camp Nou (four wins, two draws).
AC Milan's last victory against Barcelona at the Camp Nou in the Champions League was in September 2000 (2-0). Since then, they've had two draws and two defeats.
AC Milan have conceded at least three goals in four of their last six away games in the Champions League knockout stages.
AC Milan have failed to keep a clean sheet in their last eight away games in the Champions League.
AC Milan's last away win the Champions League knockout stages was against Bayern Munich in April 2007 (2-0).
Barcelona (5,447) have completed 3,251 more passes than AC Milan (2,196) in the Champions League this season.
AC Milan's last seven goals in the Champions League have all been in the second-half.
Lionel Messi only made one touch inside the opposition box in the first leg and didn't get a single shot on target.
Stephan El Shaarawy has been directly involved in four of Milan's last eight goals in the Champions League (two goals, two assists).
