Barcelona took the advantage over Arsenal in their round of 16 clash at the Emirates on Tuesday night as they won 2-0 thanks to two goals from Lionel Messi.
Juventus came from two goals down to earn a 2-2 draw in the first leg of their Champions League last-16 tie with Bayern Munich.
Real Madrid beat Roma 2-0 in their Champions League last-16 first leg at the Stadio Olimpico, with away goals from Cristiano Ronaldo and Jese giving them the upper hand.
Gent gave themselves a Champions League lifeline with two late goals in a 3-2 home defeat against Wolfsburg.
Zlatan Ibrahimovic and Edinson Cavani scored as Paris Saint-Germain took a 2-1 advantage over Chelsea in the first leg of their Champions League last-16 clash on Tuesday.
Benfica have a slender 1-0 advantage over Zenit St Petersburg after Oliveira Jonas' injury-time goal at the Estadio da Luz.
Barcelona and Argentina star Lionel Messi was awarded the 2015 Ballon d'Or at Monday's gala event in Zurich.
With four players each from Barcelona and Real Madrid, the Spanish giants combined to put eight players on the 2015 FIFPro World XI.
The highlight of the Champions League last-16 draw sees Arsenal take on Barcelona and Juventus take on Bayern Munich.
Jose Mourinho received a slice of luck and another reprieve as Chelsea advanced to the knockout stages of the Champions League as Group G winners with a 2-0 victory over his former club Porto.
Olivier Giroud inspired Arsenal to complete a Champions League group stage comeback as his hat trick at Olympiakos sealed their place in the last 16.
Bayer Leverkusen could not find a winner against Barcelona as their final Champions League Group E match ended 1-1, which saw the German side fail to qualify for the last 16 and drop into the Europa League.
Robert Lewandowski notched a quickfire brace as Bayern Munich rounded off their Champions League Group F fixtures with a 2-0 win at Dinamo Zagreb.
Gent beat Group H winners Zenit St Petersburg 2-1 at Ghelamco Arena to become the first Belgian club to get through to the knockout stages of the Champions League in 15 years.
Gary Neville watched his Valencia team slide into the Europa League after his Mestalla debut saw Lyon claim a 2-0 Champions League victory.
Denys Garmash's goal was enough to give Dynamo Kiev a 1-0 win over Maccabi Tel Aviv and send them through to the knockout stages of the Champions League.
Roma squeezed through to the Champions League last 16 after being held to a 0-0 draw at home by BATE Borisov in their final Group E game.
CSKA Moscow were unable to pull off a shock win over PSV Eindhoven, and United now face the prospect of playing Europa League football in the new year.
Sevilla will try to defend their Europa League crown after a 1-0 home win over Juventus secured them third place in Champions League Group D.
Raheem Sterling celebrated his 21st birthday with a quickfire double to send Manchester City through to the Champions League last 16 as group winners.
PSV Eindhoven secured their place in the knockout stages of the Champions League with a late 2-1 win against Group B's bottom club CSKA Moscow.
Cristiano Ronaldo and Karim Benzema both scored hat-tricks as Real Madrid hammered Malmo 8-0 to equal the highest ever victory in the Champions League.
Shakhtar Donetsk held on to a Europa League place despite suffering a fifth defeat in six games in Champions League Group A against Paris Saint-Germain.
Atletico Madrid clinched first place in Champions League Group C after winning their top-of-the-table encounter with Benfica 2-1 at the Estadio da Luz.
Galatasaray secured themselves a Europa League spot with a 1-1 Champions League Group C draw against Astana.
Mario Mandzukic scored the only goal as Juventus leapfrogged Manchester City in Champions League Group D with a 1-0 win in Turin.
Manchester United were held to a goalless draw by PSV Eindhoven at Old Trafford on Wednesday night, meaning their Champions League hopes will depend on their final group game away at Wolfsburg.
Zlatan Ibrahimovic marked his return to his hometown club by helping PSG to a 5-0 Champions League victory over Malmo at the Swedbank Stadion.
Under-fire Rafael Benitez survived a late scare on a night when Real Madrid won their Champions League group, conceding three late goals against Shakhtar Donetsk.
Wolfsburg are on the brink of qualifying for the Champions League knock-out stages after winning 2-0 at CSKA Moscow.
Cristiano Ronaldo scored from a free kick to help Real Madrid beat Gremio 1-0 and claim the Club World Cup in Saturday's final in Abu Dhabi.
Gareth Bale was the surprise hero as Real Madrid survived a shock against outsiders Al Jazira to win 2-1 in Wednesday's extra dramatic Club World Cup semifinal in Abu Dhabi.
Reigning champions Real Madrid will face Paris Saint-Germain in the Champions League round of 16, while Chelsea take on Barcelona.
Real Madrid star Cristiano Ronaldo won the fifth Ballon d'Or of his career on Thursday, matching Lionel Messi as the most-awarded winner of one of the sport's top individual honours.
A scintillating display of football from Liverpool's Fab Four saw Jurgen Klopp's side blaze their way into the Champions League knockout phase with a 7-0 victory over Spartak Moscow.
Manchester City slumped to their first defeat of the season with a 2-1 loss to Shakhtar Donetsk in their final Champions League Group F game.
Fernando Llorente and Georges-Kevin Nkoudou scored their first goals for Tottenham goal as Spurs strolled into the Champions League round of 16 by beating Apoel Nicosia.
Cristiano Ronaldo became the first player to score in every Champions League group stage match as Real Madrid beat Borussia Dortmund 3-2 at the Bernabeu.
Feyenoord finally secured their first points in Champions League Group F, rallying from a goal down to beat Napoli 2-1 on Wednesday, costing the Serie A side a spot in the round of 16.
Sevilla qualified for the round of 16 of the Champions League with a 1-1 draw at Maribor on Wednesday.
Ten-man Porto advanced out of Group G with a 5-2 defeat of a disappointing Monaco side, who also went down a man at the Estadio do Dragao.
RB Leipzig's Champions League debut ended in a 2-1 home loss to Group G winner Besiktas on Wednesday.
Bayern Munich got a little payback against Paris Saint-Germain with a 3-1 win at the Allianz Arena on Tuesday night in Group B.
Juventus secured their place in the round of 16 of the Champions League with a 2-0 victory against Olympiakos in Greece.
Barcelona completed their Champions League Group D campaign with a 2-0 win over Sporting Lisbon at the Camp Nou.
Manchester United came from behind to beat CSKA Moscow and top their Champions League group as Jose Mourinho's men took their unbeaten home run to a club record-equalling 40th match.
Chelsea missed a chance to finish top of Champions League Group C after a 1-1 draw at home to Atletico Madrid, who will settle for a Europa League spot.
Roma progressed to the Champions League knockout stage as Group C winners after beating Qarabag 1-0 on Tuesday.
Celtic will be playing European football after Christmas despite a 1-0 Champions League defeat by Anderlecht at Parkhead.
Lionel Messi started on the bench as Barcelona secured their passage into the round of 16 of the Champions League with a 0-0 draw at Juventus.
Corentin Tolisso set up one goal and scored another to give Bayern Munich a 2-1 win over Anderlecht on Wednesday in Group B of the Champions League.
Manchester United were denied a place in the Champions League knockout phase as Michael Lang's late strike secured Basel a memorable, and deserved, victory.
Willian scored twice and was fouled for two penalties as Chelsea cruised into the Champions League knockout stages with a 4-0 win over 10-man Qarabag at the Olympic Stadium in Baku.
Antoine Griezmann's stunning goal kept Atletico Madrid's Champions League hopes alive as they grabbed a vital victory over Roma.
Celtic suffered another night of European anguish against Paris St Germain in a 7-1 thrashing in the Parc des Princes.
Raheem Sterling struck a late winner as Manchester City secured top spot in Champions League Group F with a 1-0 win over Feyenoord.
Cristiano Ronaldo set another Champions League record as holders Real Madrid sealed their place in the knockout stages with a comprehensive victory against Apoel Nicosia.
Lorenzo Insigne's magical strike broke Shakhtar Donetsk's defences and Napoli went on to a 3-0 win, which gives them hope of Champions League progress.
Liverpool squandered a three-goal half-time lead to throw away the chance of early Champions League qualification as Sevilla netted a 93rd-minute equaliser in Spain.
Son Heung-Min proved the scourge of Borussia Dortmund again as his late winner ensured Tottenham will go through to the Champions League round of 16 as group winners.