All the stats, facts and figures you can handle ahead of Tuesday's Champions League action.
FC Basel v Bayern Munich (Group E)
Basel have lost their last three Champions League matches on home soil.
Bayern's last nine Champions League away games have seen a total of 38 goals scored at an average of 4.2 per match.
Basel have only ever played German teams in European competition four times, losing twice and drawing twice.
Bayern's only completed European tie against a Swiss side came in 1987 when they best Neuchatel Xamax 3-2 over two legs.
Bayern drew a Basel side in the 1962/63 Fairs Cup and after losing the first leg 0-3 at home, the Swiss side withdrew from the competition allowing Bayern to progress.
Thomas Müller created more chances from open play in the opening group games than any other player in the competition (7).
Both these sides dominated possession in their opening matches, Basel with 71% of the ball against Cluj and Bayern with 74% possession versus Roma.
Roma v CFR Cluj (Group E)
Roma met Cluj in the 2008-09 Champions League group stages and both sides won their away matches.
Roma have not drawn any of their last 13 Champions League matches.
The Italian side have won their last three Champions league home matches since losing to Cluj in September 2008.
Both Cluj and Roma were dominated in their opening games in terms of possession with Cluj enjoying just 29% against Basel and Roma logging only 26% versus Bayern.
If Cluj beat Roma they will have equalled the highest number of wins by a Romanian side in a Champions League group.
Roma have lost their opening Champions League group game in six of the nine Groups (including 2nd Stage) that they have participated in.
Roma fired in all of their shots on target in the game against Bayern (excluding blocked attempts).
Cluj posted the worst passing accuracy of any team in the opening matches, completing just 67% of passes.
Chelsea v Marseille (Group F)
Chelsea have never lost a home Champions League match against a French side, winning two and drawing two.
Chelsea played Marseille in the 1999-2000 Champions League with both games ending 1-0 to the home side.
Inter's win at Stamford Bridge in the Champions League last 16 back in March ended a run of 21 games without defeat at home for the Blues.
Marseille have played four Champions League matches in England and all of them have been decided by a one-goal margin - the last three ending 1-0. Their only win in England was back in October 2007 when Mathieu Valbuena scored the only goal of the game at Anfield.
Chelsea have lost none of their last 20 Champions League group Stage matches at home since defeat to Besiktas in October 2003.
Chelsea have kept 14 clean sheets in their last 17 Champions League Group Stage matches at Stamford Bridge.
Marseille have lost 13 and won just two of their last 17 Champions League Group Stage matches away from home.
The French side posted the best crossing accuracy in the opening set of matches finding a team-mate with 39% of their crosses.
Spartak Moscow v MSK Zilina (Group F)
The Russians have lost six and drawn five of their last 11 Champions League games on home soil, the joint-worst run without a win in the competition with AEK Athens (1993-2006).
Spartak & Zilina have never met in European competition.
Spartak Moscow didn't manage a single shot on target in their Champions League opener, the only team not to do so. Nevertheless, they still managed to beat Marseille thanks to an own goal by Cesar Azpilicueta (1-0).
After losing 22 Champions League games in a row, Spartak have won their last two in the competition.
Spartak are one of only four teams to win all six matches in a single Champions League Group Stage (1995-96).
Zilina only hit the target with 28% of their shots and only Ajax (13%) and Spartak (0%) posted worse figures on the opening matchday.
Ajax v AC Milan (Group G)
Ajax have only won one of the last 13 European matches against Italian opposition (1-0 vs Fiorentina in February 2009).
Ajax and Milan have played eight times in European competition with the Dutch side winning three, drawing one and losing four.
Ajax have lost their last three games against AC Milan and the last two by a 0-1 scoreline.
Two of the eight meetings between Ajax and Milan have been in the European Cup final - Milan won in 1969 while Ajax won the trophy in 1995.
The Italian side have not won any of their last three Champions League games against Dutch sides.
Three of the last four defeats Ajax have suffered at home in the Champions League have come against Italian sides.
Ajax's last home game in the Champions League came in 2005-06 at home against Milan's big rivals Inter and ended as a 2-2 draw.
Martin Stekelenburg made 13 saves in Ajax's opening match, more than any other goalkeeper.
Auxerre v Real Madrid (Group G)
Auxerre have played six matches against Spanish sides in European competition winning two, drawing two and losing two.
Real Madrid have only won two of their last nine Champions league games against French sides.
Auxerre and Real Madrid have never met in European competition.
There have only been eight goals scored in Auxerre's seven Champions League home matches.
Real Madrid have kept just two clean sheets in their last 16 Champions League away game.
The Spanish side mustered 35 shots in their opening game against Ajax, more than any other team in the opening games.
Cristiano Ronaldo fired in 11 shots during Real Madrid's game against Ajax, the joint-most of any player on the opening Matchday.
Ireneusz Jelen of Auxerre was caught offside six times against Milan, more times than any other player on Match Day 1.
Partizan Belgrade v Arsenal (Group H)
Arsenal's only previous encounter with a Serbian team was when they lost over two legs to Red Star Belgrade in the 1978-79 UEFA Cup.
Arsenal have won only one of their last nine Champions League away games (3-2 vs Standard Liège).
The Gunners have gone 12 Champions League games on the road without a clean sheet.
Partizan have drawn all three of their Champions League home matches.
Arsenal haven't won away from home in Europe against teams from any of the three countries they have to visit in this season's Champions League.
The Gunners scored six goals from just eight shots on target in their opening Champions League match.
Arsene Wenger's side's 6-0 win was the biggest ever victory on the opening match of a Champions League Group Stage.
Partizan committed 23 fouls in their opening match, more than any other team in the competition.
Sporting Braga v Shakhtar Donetsk (Group H)
Shakhtar have only won two of their eight European matches against Portuguese opposition and lost the last three in a row.
Shakhtar have only drawn one of their 15 Champions League away matches.
The Ukrainian side have won their last three Champions League games which is their best ever run in the competition.
Shakhtar have only ever kept one clean sheet away from home in 15 Champions League matches on the road, but that came in Portugal against Benfica.
Sporting Braga won 14 and drew one of their 15 league games at home in the Portuguese top flight last season, conceding only six goals along the way.
Braga won their two Champions League home qualifying matches without conceding a goal.
Braga have only won one of their last seven matches in European competition (excluding qualifiers).
