Watch all the highlights of goals and key plays as the Champions League's Matchday 2 comes to a close with a series of vital matches.
Champions League Matchday 2 closed with a bang, with Paris Saint-Germain routing Bayern Munich in its biggest test yet, while Chelsea stole points from Atletico Madrid with Michy Batshuayi's stunning win at the death.
Manchester United, Barcelona and Juventus were all also winners on a wild day in the competition, while Celtic and Basel bounced back from opening-day defeats with thorough victories of their own.
In the day's early game, Roma edged Azerbaijan upstart Qarabag 2-1, riding a pair of goals in the opening 15 minutes to the win.
Watch all the highlights from the day's action below:
CHELSEA WINS AT THE DEATH
Michy Batshuayi stole three points for Chelsea at Atletico Madrid when it looked like the two powers were headed for a draw. The Belgian redirected Marcos Alonso's cross in at the near post to deliver a 2-1 win with the last kick of the match.
NEYMAR PILES ON BAYERN AFTER MBAPPE WOWS
PSG made it 3-0 in the 63rd minute through Neymar, who had the easy finish from the doorstep after Kylian Mbappe's nifty work in the box to burn David Alaba. Dani Alves had sprung Mbappe into the area with a trademark push forward to set it all up.
BASEL MAKES IT A HIGH 5
What a day for the Swiss side FC Basel. Dimitri Oberlin scored his second to make it 4-0, before 19-year-old Blas Riveros followed up with the club's fifth in an absolute dressing-down of Benfica.
HIGUAIN, MANDZUKIC DELIVER FOR JUVENTUS
It took a bit for Juventus to go in front of Olympiakos, but the goal eventually came from Gonzalo Higuain, who turned in an opportunistic finish in the 69th minute.
Mario Mandzukic doubled the lead 11 minutes later, following up on a rebound with an instinctive tally.
MORATA SCORES ON MADRID RETURN
Former Real Madrid striker Alvaro Morata returned to the Spanish capital with Chelsea and delivered a huge equalizer just before the hour mark, heading home with the redirect for his seventh goal since a lucrative summer transfer. The goal came with Diego Costa watching in the stands, as he bides his time until he can suit up again for the Rojiblancos.
MKHITARYAN EXTENDS MAN UNITED ROUT
Henrikh Mkhitaryan made it 4-0 for Manchester United in Russia, extending the Red Devils' lead over CSKA Moscow after a midfield turnover in the most one-sided affair of the day.
URUGUAY ON URUGUAY CRIME NUDGES BARCELONA IN FRONT
It took a little bit, but Barcelona went ahead of Sporting Lisbon in Portugal, with Luis Suarez forcing an own goal off international teammate Sebastian Coates in the 49th minute after a free kick. They all count the same, even if they're not golazos, which this one most certainly was not.
OWN GOAL DOUBLES CELTIC'S LEAD
Kara Mbodji's own goal has Celtic in position for its first away win in the Champions League in half a decade, extending the lead over Anderlecht to 2-0 in the 50th minute.
GRIEZMANN PK GIVES ATLETICO EDGE
After a David Luiz foul on a corner kick, Antoine Griezmann converted from the spot with confidence to give Atletico Madrid a 1-0 edge over Chelsea at the Wanda Metropolitano in the 40th minute.
CELTIC BREAKS THROUGH BEFORE HALFTIME
Celtic was humbled at home by PSG in the group opener, but Leigh Griffiths put the Scottish champion ahead of Anderlecht on the road to cap a great sequence in a needed bounce-back performance.
CAVANI GOLAZO DOUBLES PSG'S LEAD
All is well at PSG after the penalty kick controversy of a couple weeks ago. Edinson Cavani made sure of that with a picture-perfect strike to pick out the upper right-hand corner after Kylian Mbappe's hold-up play and assist.
A SECOND FOR LUKAKU
Make that 10 goals in nine Manchester United games for Romelu Lukaku, who has padded his side's lead to 3-0 within half an hour. The three points are as good as Man United's.
BASEL CONTINUES TO BOUNCE BACK
Dimitri Oberlin made it two goals for Basel within 20 minutes, with the Swiss side lethal on the counter and in shape to rebound from a group-opening loss to Manchester United.
Ricky van Wolfswinkel added a penalty kick just before the hour mark, making it 3-0 and sending Basel on its way to the win.
WHAT A HIT
Unfortunately, for Javi Martinez, this wasn't a goal. PSG goalkeeper Alphonse Areola made sure of that, to maintain the hosts' 1-0 lead in the 19th minute.
LUKAKU SCORES AGAIN
Romelu Lukaku has settled in just fine at Manchester United and has appeared quite comfortable under the Champions League lights. He scored again for the Red Devils, not even five minutes in vs. CSKA Moscow.
United doubled the lead in the 19th minute via Anthony Martial, who converted from the penalty spot after Henrikh Mkhitaryan was fouled in the box.
DANI ALVES SCORES EARLY
If there was any doubt about PSG's ability against elite teams, it was answered within 120 seconds. Neymar found a wide-open Dani Alves on the right side of the box, and he finished with ease to give PSG a 1-0 lead over Bayern Munich.
BASEL WASTES NO TIME
Michael Lang scored in the second minute for FC Basel vs. Benfica, finding an empty net after a chaotic sequence.
Here are the lineups for the day's remaining matches:
PSG vs. Bayern Munich
Atletico Madrid vs. Chelsea
CSKA Moscow vs. Manchester United
Sporting Lisbon vs. Barcelona
Juventus vs. Olympiakos
Anderlecht vs. Celtic
Basel vs. Benfica
Real Madrid, Besiktas and Manchester City were big winners on the first half of Matchday 2, while Borussia Dortmund faces an uphill climb in the Group of Death.
The Champions League resumes with Matchday 3 on Oct. 17 and 18.