An excellent shot deep into second-half stoppage from Kamil Glik rescued a 1-1 draw for Monaco at home to Bayer Leverkusen.
Miralem Pjanic scored one and set up another for Gonzalo Higuain before Paulo Dybala's scorcher as Juventus conquered Dinamo Zagreb 4-0.
Son Heung-Min scored a crucial goal for Tottenham Hotspur as they came out 1-0 winners against CSKA Moscow in Champions League Group E.
Andre Schurrle scored three minutes from time to help Borussia Dortmund salvage a late 2-2 draw at home against Real Madrid in Champions League Group F on Tuesday.
Islam Slimani was the hero as Leicester made it two wins out of two in the Champions League by beating Porto 1-0 at the King Power Stadium.
Borussia Dortmund demolished Legia Warsaw in Poland as half-a-dozen different players found the net in a 6-0 Champions League rout.
Rampant Leicester marked their Champions League debut in stunning style as they thrashed Club Brugge 3-0.
Tottenham's Champions League campaign began in disappointment as an English club-record home crowd watched them beaten 2-1 by Monaco at Wembley.
Sergio Aguero scored his second hat trick of the season as Manchester City overpowered Borussia Monchengladbach 4-0 in their delayed Champions League Group C opener.
Juventus were frustrated by a stubborn Sevilla side in Turin as the 2015 Champions League finalists started this year's campaign with a 0-0 draw.
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.
Lorenzo Insigne's late winner gave Napoli a deserved 1-0 Champions League victory over Liverpool on Wednesday that saw the Italians move to the top of Group C.
Mauro Icardi took advantage of an error from PSV Eindhoven goalkeeper Jeroen Zoet to gift Inter Milan a 2-1 victory in their Champions League Group B clash on Wednesday.
Borussia Dortmund's blistering start to the season under manager Lucien Favre gathered momentum as the Bundesliga leaders consigned ailing Monaco to a 3-0 defeat in the Champions League on Wednesday.
Antoine Griezmann had a goal in each half -- including the 8,000th Champions League goal -- and Koke also scored in added time to lead Atletico Madrid to a 3-1 win over Club Brugge on Wednesday.
A second-half header by Moussa Marega gave Porto a 1-0 Champions League win over Galatasaray at home on Wednesday.
Lionel Messi scored twice and powered Barcelona to a 4-2 win against Tottenham in Champions League Group B at Wembley Stadium on Wednesday night.
United States international Weston McKennie's late header gave Schalke a 1-0 win over Lokomotiv Moscow in the Champions League on Wednesday as they continued to recover from a poor start to the season.
Neymar scored his second Champions League hat trick as Paris Saint-Germain rolled to a 6-1 victory over Red Star Belgrade in a Champions League group-stage game at the Parc des Princes on Wednesday.
Roma's Edin Dzeko was again the tormentor for Viktoria Plzen as he scored a hat trick in a 5-0 Champions League Group G win for the Italian side on Tuesday.
Manchester United's dismal run of form continued as they were held to a 0-0 draw by Valencia in a drab Champions League clash at Old Trafford.
Lyon produced a stirring fightback to claw back two superb goals from Shakhtar Donetsk's Junior Moraes and rescue a 2-2 draw behind closed doors in a thrilling end-to-end contest at their Groupama Stadium on Tuesday.
A depleted Real Madrid suffered a shock 1-0 Champions League defeat at CSKA Moscow on Tuesday, extending a poor run of form for the holders that has left them without a win in three games.
Benfica played the entire second half with 10 men and squandered a two-goal lead before claiming a thrilling 3-2 win away to AEK Athens in Champions League Group E action on Tuesday.
Full-back Noussair Mazraoui earned a youthful Ajax side a 1-1 draw at misfiring Bayern Munich in their Champions League Group E clash at the Allianz Arena on Tuesday.
Paulo Dybala hit a hat-trick as Juventus maintained their 100% record in the Champions League courtesy of a 3-0 win against BSC Young Boys.
David Silva nipped in to secure a late 2-1 victory for Premier League champions Manchester City at Hoffenheim.
Cristiano Ronaldo's Champions League debut for Juventus lasted only 29 minutes as he was red-carded but the Italians began their Group H campaign impressively with a 2-0 victory at Valencia on Wednesday.
Paul Pogba scored two first-half goals as Manchester United spoiled Young Boys' first appearance in the group stage of the Champions League by cruising to a comfortable 3-0 victory at the Stade de Suisse on Wednesday.
Manchester City looked far from potential Champions League winners as they fell to a surprise 2-1 loss at home to Olympique Lyonnais on Wednesday with a flat performance that leaves them with plenty of work to do to progress from Group F.
CSKA Moscow salvaged a 2-2 draw with Viktoria Plzen in the Champions League on Wednesday after a penalty deep in stoppage time.
Bayern Munich midfielder Renato Sanches had a goal and an assist in his return to Benfica in a 2-0 victory on Wednesday.
Real Madrid rode goals from Isco and Gareth Bale to a 3-0 win against Roma in their Champions League Group G opener at the Camp Nou on Wednesday.
The youngest coach in Champions League history drew his debut game Wednesday as Hoffenheim's match at Shakhtar Donetsk finished 2-2.
Nicolas Tagliafico scored two second-half goals as Ajax marked their return to the Champions League group stages with a 3-0 victory over AEK Athens on Wednesday.
A stoppage-time goal from Roberto Firmino gave Liverpool a 3-2 win over Paris Saint-Germain on a dramatic Champions League night at Anfield.
Red Star Belgrade ground out a 0-0 home draw against Napoli on the Serbian side's Champions League debut as their goalkeeper Milan Borjan made a flurry of telling saves in a pulsating Group C clash on Tuesday.
Borussia Dortmund's United States forward Christian Pulisic came off the bench to grab a late goal for a 1-0 Champions League Group A victory over Club Brugge on Tuesday.
Atletico Madrid battled their way back from a goal down to pull off a confidence-boosting 2-1 win at AS Monaco in Champions League Group A on Tuesday, with a defiant response to their troubling start to the domestic season.
Inter Milan scored two late goals as they came from 1-0 down to beat Tottenham Hotspur 2-1 in a dramatic Champions League clash at the San Siro.
Lionel Messi scored a record-setting hat trick as Barcelona opened their Champions League campaign in Group B with an impressive 4-0 win against PSV Eindhoven at the Camp Nou.