Substitute Alvaro Morata struck deep into injury-time to seal a stunning Champions League comeback for holders Real Madrid at the Bernabeu on Wednesday night.
Lionel Messi helped give Celtic another harsh Champions League lesson with a hat trick as Barcelona thrashed the Hoops 7-0 in their Group C opener at the Nou Camp.
Midfielder Joshua Kimmich continued his goal rush as he claimed a double in Bayern Munich's 5-0 Champions League demolition of FC Rostov.
Manchester City's Champions League game against Borussia Monchengladbach, postponed because of torrential rain, will be played on Wednesday evening at 7:45 p.m. BST.
Atletico Madrid's bid to reach a third Champions League final in four years got off to a winning start with a hard-fought 1-0 victory over PSV Eindhoven.
Arkadiusz Milik was Napoli's hero as they came from behind to beat 10-man Dynamo Kiev 2-1 in Ukraine.
Alexis Sanchez scored in the second half to help Arsenal salvage a 1-1 draw at Paris Saint-Germain, who were left to rue multiple missed chances after scoring in the first minute of their Champions League opener.
Pep Guardiola will return to the Camp Nou after Manchester City and Barcelona were drawn together in the Champions League group stage on Thursday.
Manchester City sealed their place in the Champions League group stage with a comfortable 6-0 aggregate victory over Steaua Bucharest in the playoff round on Wednesday night, and will be in pot 2 for Thursday's draw.
Rostov eliminated Ajax to reach the group stage with a 4-1 rout to claim a 5-2 aggregate win overall.
Joe Hart was hailed by supporters as Manchester City went through the motions to claim their place in the Champions League group stage at Steaua Bucharest's expense.
Roma crashed out of the Champions League before the group stage following two more red cards in a 3-0 home defeat to Porto on Tuesday.
Celtic reached the Champions League group stage for the first time in three years, but only after an enormous scare in Israel.
Celtic's Champions League dream moved closer to reality with a 5-2 win over Hapoel Be'er Sheva at Parkhead but not before the home fans suffered a brief nightmare.
Porto and Roma played out a 1-1 draw in the final qualifying round of the Champions League to set up a tense second meeting on Aug. 23.
Sergio Aguero scored a hat trick as Manchester City made light work of Steaua Bucharest by winning 5-0 in Romania to put one foot in the Champions League group stage.
Dani Carvajal was the hero as he fired Real Madrid to a 3-2 victory in the UEFA Super Cup over 10-man Sevilla with a brilliant extra-time winner.
Pep Guardiola faces a trip to Romania as Manchester City take on Steaua Bucharest in the final qualifying round of the Champions League.
Shakhtar Donetsk, Olympiakos and Fenerbahce all crashed out of the UEFA Champions League in the third qualifying round on Wednesday, while Monaco, Ajax and Celtic got through to the playoff round.
Ireland's Dundalk progressed to the Champions League's playoff stages after a 3-1 aggregate defeat of BATE Borisov -- securing European group-stage football this season.
Leigh Griffiths' 78th minute strike gave Celtic a 1-1 draw against FC Astana and put the Hoops firmly in charge of their Champions League destiny.
Shakhtar Donetsk began their Champions League campaign with a 2-0 win over Young Boys in the third qualifying round on Tuesday.
Celtic put part-time Lincoln Red Imps in their place with a 3-0 Parkhead win that set up a Champions League third-round qualifying meeting with Astana.
Ties are to be played on July 26 or 27 and August 2 or 3.
Brendan Rodgers' first game as Celtic boss ended in a humiliating 1-0 defeat to Gibraltar's Lincoln Red Imps in the first leg of their second round Champions League qualifier on Tuesday.
Real Madrid earned Europe's biggest club trophy for a record 11th time by defeating Atletico Madrid 5-3 on penalties, as the Champions League final finished 1-1 after extra-time on Saturday.
It's a city divided as Real Madrid take on Atletico Madrid in the Champions League final. The San Siro showdown is a repeat of the 2014 final in Lisbon, where Atleti suffered late heartbreak.
A deflected Gareth Bale strike ended Manchester City's Champions League challenge and sent Real Madrid through to face city rivals Atletico in the final.
Atletico Madrid reached their second Champions League final in three years as they knocked out Bayern Munich on away goals despite losing the semifinal second leg 2-1 at the Allianz Arena.
Saul Niguez's first-half solo strike proved enough to hand Atletico Madrid a narrow 1-0 victory over Bayern Munich in the first leg of their Champions League semifinal at the Vicente Calderon.
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.