Watch all the highlights of goals and key plays from Tuesday's action on Champions League Matchday Six.
Manchester United, PSG, Roma and Barcelona are through to the Champions League knockout stage as group winners after wrapping up first-place finishes on the first half of Matchday Six on Tuesday.
Manchester United came back from a deficit to CSKA Moscow to avoid needing a tiebreaker to go through, while Roma and PSG both used the head-to-head tie breaker to pip Chelsea and Bayern Munich to first place, respectively. For PSG, the 3-1 loss to Bayern Munich was its first setback in the competition, while Chelsea's 1-1 draw with Atletico Madrid and Roma's 1-0 win over Qarabag were enough to launch the Serie A side into first.
Juventus also clinched a place in the last 16, beating Olympiakos 2-0 to go through in second place behind Barcelona in Group D.
Atletico Madrid, Celtic, CSKA Moscow and Sporting CP are the sides who will head to the Europa League knockout stage as third-place finishers.
Here are the final scores from around the competition:
Manchester United 2, CSKA Moscow 1
Benfica 0, FC Basel 2
Bayern Munich 3, PSG 1
Celtic 0, Anderlecht 1
Chelsea 1, Atletico Madrid 1
Roma 1, Qarabag 0
Barcelona 2, Sporting 0
Olympiakos 0, Juventus 2
Watch highlights of goals and key plays from all of the matches throughout the day below:
OWN GOAL A DAGGER FOR ATLETICO MADRID
Stefan Savic's own goal, caused by Eden Hazard, is likely the final blow for Atletico Madrid, which ultimately couldn't overcome its lackluster start to group play. The goal brought Chelsea even at 1-1 and forced Atletico Madrid to need another goal all while needing Qarabag to pull even with Roma.
TOLISSO RESTORES BAYERN'S TWO-GOAL EDGE
Corentin Tolisso has scored his second of the day vs. PSG, but Bayern still needs two more goals in the final 15 minutes to pip the French powerhouse to first in the group. If nothing else, it's a statement of intent for the knockout stage, and a wake-up call for PSG, which had coasted through the group stage until Tuesday.
MAN UNITED TURNS DEFICIT INTO LEAD IN A FLASH
Two goals in a minute from Romelu Lukaku and Marcus Rashford put Manchester United back in the driver's seat with a 2-1 lead vs. CSKA and all but ends the Russian side's hopes of making the last 16. Dimitri Oberlin scoring moments later for Basel piled on, with United to win the group and the Swiss side to go through in second.
ALCACER SCORES FOR MESSI-LESS BARCELONA
Lionel Messi was given a bit of a breather Tuesday, with Barcelona's place in the last 16 already secured, and Paco Alcacer opened the scoring just before the hour mark on Denis Suarez's corner kick
PEROTTI EASES ROMA'S WORRY
With Roma being held by Qarabag, the scenario remained in play that an Atletico Madrid win at Chelsea could ruin the Italian side's hopes and send it to the Europa League, but Diego Perotti scored a massive go-ahead goal.
That was made all the more important as Atletico Madrid scored moments later through Saul Niguez to take a 1-0 lead on Chelsea at Stamford Bridge.
A Roma win would seal the deal, but a Qarabag equalizer would knock Roma out and send Atletico through.
MBAPPE PULLS ONE BACK
Bayern Munich's dreams of outscoring PSG by four are probably toast after Kylian Mbappe converted after Edinson Cavani's expert flick to pull a goal back and make it 2-1 to the German hosts.
ODD GOAL PUTS UNITED IN HALFTIME HOLE
CSKA Moscow had hardly threatened Manchester United, but Vitinho's shot deflected off the back of Alan Dzagoev, who had appeared to be offside, and the goal stood, leaving Man United, Basel and CSKA all level on 12 points in the live table and the former two in position to go through.
TOLISSO DOUBLES BAYERN'S LEAD ON PSG
Bayern Munich entered the day with slim chances of winning its group, but Corentin Tolisso's header off James Rodriguez's cross has the German power up 2-0 on PSG. Two more goals (a four-goal win) would catapult Bayern into first in the group.
CUADRADO PUTS JUVENTUS UP
Juventus is hoping to remove all doubt and coast to the round of 16, and Juan Cuadrado put the club in position to do that with his 15th-minute goal in Greece. He redirected Alex Sandro's cross from the left at the doorstep to put Olympiakos in a 1-0 hole.
LEWANDOWSKI SCORES EARLY VS. PSG
PSG pasted Bayern Munich in their earlier meeting, but that was a different German team at a different time, and Tuesday, under Jupp Heynckes, Bayern took the early lead. It came, unsurprisingly, from Robert Lewandowski, who scored from close range in the seventh minute despite shouts of offside to make it 1-0.
BASEL TAKES EARLY STEP TOWARD LAST 16
Benfica has had a brutal Champions League campaign and it got worse early vs. Basel, with Mohamed Elyounoussi scoring in the fifth minute. A Basel win would all but secure its place in the round of 16, regardless of CSKA's result vs. Manchester United.
Here are the lineups for the day's matches:
Manchester United vs. CSKA Moscow
Benfica vs. FC Basel
Bayern Munich vs. PSG
Celtic vs. Anderlecht
Chelsea vs. Atletico Madrid
Roma vs. Qarabag
Barcelona vs. Sporting
Olympiakos vs. Juventus
The Champions League group stage concludes on Wednesday, and the final 16 teams will learn their first knockout round opponent on Monday at the draw in Nyon, Switzerland.