The Champions League group stage has reached its business end seemingly in the blink of an eye, with Liverpool becoming the first English representative to book their spot in the last-16 on Wednesday night.
They did so with another dazzling display against Diego Simeone's Atletico Madrid, strolling past the Spaniards 2-0 at Anfield to claim their fourth win in as many outings and secure their spot as Group B winners.
Fellow European giants Ajax also needed just four games to confirm their progression out of the group with a highly impressive 3-1 win away at German outfit Borussia Dortmund, who are now in a battle to qualify for the knockout stages.
Jurgen Klopp's Liverpool are the first English team to qualify for the Champions League last-16
Previously, on Tuesday night, powerhouses Bayern Munich and Juventus booked their spots in the draw for the last-16, which will take place in mid-December.
There is still plenty to play for with two sets of fixtures remaining, with plenty of work to do yet for the likes of Manchester United, Atletico Madrid and Barcelona, while Manchester City and Chelsea are in a strong position.
Sportsmail takes you through the state of play as the Champions League group stage approaches its close below.
Who has qualified for the Champions League last-16?As stated, four teams have now qualified for the Champions League knockout stages, though only one has guaranteed a place as group winner.
That was Liverpool, whose fine victory over Atletico Madrid capped what has been a scintillating group stage thus far.
They previously battled past Italian giants AC Milan in a 3-2 thriller at Anfield, before handing Porto - who they just love to play - a 5-1 hiding on Portuguese soil. They also beat Atletico 3-2 in the reverse fixture at the Wanda Metropolitano Stadium.
Ajax have also enjoyed a perfect start to their Champions League campaign, with their 3-1 victory over Dortmund adding to a 4-0 win over the German giants on home turf, alongside a 2-0 win over Beskitas and a 5-1 romp against Portuguese outfit Sporting Lisbon.
Two elites of the game Bayern and Juventus sealed their progression to the last-16 on Tuesday, both maintaining perfect records with respective wins over Benfica and Zenit St. Petersburg.
Bayern had previously emphatically beaten Barcelona at the Nou Camp, before claiming further victories - and clean sheets - over Dynamo Kiev and Benfica.
Juventus, meanwhile, previously earned wins over Malmo, Chelsea and Zenit.
Who is still fighting to qualify?Group A: Manchester City, Paris Saint-Germain and Club Brugge
Manchester City are in a favourable position in Group A, sat a point ahead of PSG in second
The Premier League champions dazzled as they put four past Club Brugge on Wednesday
Manchester City all-but confirmed their progress to the Champions League knockout stages with a convincing 4-1 win at home to Club Brugge on Wednesday night.
Last year's finalists, who fell short once more as Thomas Tuchel guided Chelsea to an historic triumph, can seal their spot in the last-16 with a game to play should they beat Paris Saint-Germain on November 24.
A draw would also be sufficient for both sides, so long as Club Brugge don't win at home to RB Leipzig.
And while that once was a perhaps likely predicament, Leipzig are enduring a woeful season following Julian Nagelsmann's departure to Bayern, sat ninth in the Bundesliga table and already crashing out of the Champions League.
They can still battle it out for a Europa League spot, with the team finishing in third dropping into the competition, with their clash against Club Brugge next up set to be a fascinating watch.
PSG, who are yet to gel fully under Mauricio Pochettino and with Lionel Messi in the team, still have work to do. A loss against City next up could set up a mouthwatering final-day tie against Club Brugge in early December.
Remaining Group A fixtures
Manchester City vs Paris Saint-Germain, November 24 Club Brugge vs RB Leipzig, November 24 Paris Saint-Germain vs Club Brugg, December 7 RB Leipzig vs Manchester City, December 7Group B: Porto, Atletico Madrid and AC Milan
Group B remains entirely open, despite Liverpool securing top-spot on Wednesday night
Diego Simeone's Atletico Madrid are in real danger of missing out on a place in the knockouts
Liverpool, as stated, have already claimed top-spot in Group B, but the runner-up spot place remains open to the other three participants.
The punters out there would have counted on Atletico Madrid to join Liverpool in the last-16, but after falling to back-to-back defeats to the in-form side, they now face a real battle for a place.
It's Porto who have the advantage after four fixtures, and wins over Liverpool and Atletico Madrid would see them progress to the knockout stage.
Beating Liverpool in the form they're in is a tough ask, however, and with Atletico coming up against struggling AC Milan next, it's the Spaniards who could have the advantage going into matchday six.
There, a fascinating final-day clash between Porto and Atletico will take place, while AC Milan face a tricky home tie against Liverpool as they look to salvage a place in the top three.
Remaining Group B fixtures
Atletico Madrid vs AC Milan, November 24 Liverpool vs Porto, November 24 Porto vs Atletico Madrid, December 7 AC Milan vs Liverpool, December 7Group C: Borussia Dortmund and Sporting Lisbon
Borussia Dortmund and Sporting Lisbon are neck-and-neck in the race for second place
Ajax have already booked their place in the last-16 following their perfect start to Group C
Ajax have already topped Group C, while Besiktas relinquished their spot in European competition this season with a 4-0 drubbing at Sporting Lisbon on Wednesday.
It's up to Sporting and Dortmund to determine who progresses into the last-16 and who drops into the Europa League, with an all-important clash between the pair next up on November 24 in Portugal.
Dortmund, who won the
