Champions League Round of 16 - Previews, live streams, highlights and match reports of every first leg tie

The Champions League returns with another sizzling round of midweek fixtures as the knockout stages return following a lengthy festive break.

As ever, BT Sport will bring you exclusive coverage of every second of the tournament over the coming weeks and months.

Here's all the information you need, including full match previews, live streams and TV broadcast times, for this week's Round of 16 first leg ties.

Atletico Madrid 0-1 Chelsea

Lazio 1-4 Bayern Munich

Atalanta v Real Madrid

Borussia Monchengladbach v Man City

RB Leipzig 0-2 Liverpool

Barcelona 1-4 PSG

Porto 2-1 Juventus

Sevilla 2-3 Borussia Dortmund

Tuesday

Atletico Madrid 0-1 Chelsea - Watch replay

Olivier Giroud produced another Champions League special to hand Chelsea the advantage in their last-16 tie with Atletico Madrid after a 1-0 first-leg win in Bucharest.

The Blues forward grabbed his sixth goal in the competition this season with an overhead kick in the 68th minute but it was only awarded after a lengthy VAR review.

It was thoroughly deserved for Thomas Tuchel’s side, who dominated for large parts and extended their unbeaten run under the German to eight games since his arrival on January 26.

A negative was bookings for Mason Mount and Jorginho, which rules them out of the second leg, but Atletico boss Diego Simeone knows his team will need to score at least twice next month to go through in normal time.

Lazio v Bayern Munich - Watch replay

Seventeen-year-old wonderkid Jamal Musiala became the youngest English scorer in the Champions League as the holders romped to victory in Rome.

The former Chelsea youngster was a surprise inclusion for the last 16 first leg tie but turned in a performance that defied his tender years and showed why both England and Germany are hoping to secure his international future.

It was also an historic night for Robert Lewandowski who scored his 72^nd goal in the competition to move outright third in the all-time scorers list – behind only Cristiano Ronaldo and Lionel Messi.

Leroy Sane also struck as the visitors ran in three first-half goals before Francesco Acerbi turned into his own net from the former Manchester City winger’s cross.

Joaquin Correa did restore some pride for the home side, who were featuring in the knockout stages for the first time in more than two decades, but it was too little too late.

Wednesday

Atalanta v Real Madrid - 7.30pm, BT Sport 3 HD

Live stream

Only a gut-wrenching 89^th-minute collapse prevented Atalanta dumping Paris Saint-Germain out of the quarter-finals during last year’s edition of the tournament.

That should serve as plenty of warning to Real Madrid not to underestimate Gian Piero Gasperini’s side.

The Italian outfit are arguably the most watchable team in the competition and have sparked an interesting tactical revolution in recent times as coaches across Europe admire their unusual fluid 3-4-1-2 formation from afar.

But the key to making it work has been the personnel – and in that department there has been a crucial departure from last season.

Influential pocket-sized playmaker Papu Gomez was shown the door in January after a public falling out with the boss and in his absence, Atalanta have sometimes looked short of their creative best.

Regardless, they can still call upon deadly Colombian forward Duvan Zapata with the towering technician Josip Ilicic gliding off the right wing to cause more than a few issues up top.

Real have shown themselves to be anything but infallible in the tournament so far, losing twice to Shakhtar and drawing against Gladbach in a game they had looked down and out.

But this competition is in the club’s DNA and Zinedine Zidane navigated through choppy waters in the group stage to ensure Real reached the knockouts for the 24^th consecutive season – the longest run in Champions League history.

Despite their difficulties domestically in the early part of the season, Real now find themselves on a good run of form just three points off top spot in La Liga.

Zidane will be hoping they can carry that form into the Champions League, where he has only lost one knockout tie from 13 as Real boss - last season’s Round of 16 defeat to Man City.

However, Real’s chances could be dealt a blow with the possible absence of Karim Benzema from the travelling squad.

The 33-year-old Frenchman picked up a muscle injury last week and was left out of Real’s squad to face Valladolid at the weekend.

Borussia Monchengladbach v Man City - 7pm, BT Sport 2 HD

Live stream

It’s all coming together perfectly for Pep Guardiola at the moment and Manchester City look to stand their best chance ever of winning the Champions League on current form.

The Citizens have won 18 in a row across all competitions since being held 1-1 by West Brom in December and show no sign of slowing down any time soon.

While City have always been able to call upon considerable strength in depth given the resources available to them, this season the squad has gone to a new level.

With at least seasoned internationals competing for each place in the starting XI, the likes of Ilkay Gundogan, John Stones and Bernardo Silva have stepped up even beyond their usual excellence to hit new heights.

They’re now 10 points clear at the top of the Premier League division and it would take a brave soul to bet against them cantering to the title from here out.

With that in mind, the focus will be on securing a first ever Champions League title and Borussia Monchengladbach should be fearful of what lies ahead as they prepare to face the Sky Blues in Budapest on Wednesday night.

Without a win since January 22, Gladbach have drifted towards midtable obscurity in recent weeks while also being forced to deal with the fallout of their coach, Marco Rose, announcing his decision to join league rivals Borussia Dortmund at the end of the season.

It has hardly been ideal preparation for a side who looked like they might have the ability to become this season’s dark horses at times during the group stage – most notably during a dramatic 2-2 draw with Real Madrid they will feel aggrieved not to have won.

Star man Alassane Plea will be one for the City back line to watch out for having been involved in eight goals during the Champions League group stage, more than any other player.

Tuesday 16th February

RB Leipzig 0-2 Liverpool - Watch replay

Liverpool produced the dream response to the weekend's defeat against Leicester as they defeat RB Leipzig 2-0 in the first leg of their Champions League Round of 16 tie.

The Germans flew out of the traps in the opening few minutes but Liverpool responded well, pressing high and showing good energy across the pitch to put Leipzig under pressure in response.

Their endeavour went unrewarded during a pleasing opening 45 minutes - but they were gifted a breakthrough shortly after the interval when Mo Salah pounced on a loose back pass to race through and slot his 24th goal of the season.

Another Leipzig error allowed Sadio Mane to break his mini goal drought as the Senegalese forward leapt on another loose ball to curl a precise finish into the borrom corner.

Two goals to the good, Liverpool then ensured it was job done as they cruised to a professional victory that will restore a smile on the face of their beloved manager after a tumultuous few weeks on Merseyside.

Barcelona 1-4 PSG - Watch replay

Paris Saint-Germain are all but assured of their place in the last eight of the Champions League after mauling Barcelona 4-1 at the Nou Camp.

Hat-trick hero Kylian Mbappe was the man of the moment, putting an ageing Barca back line to the sword with a magnificent display of speed, finesse and intelligence.

Barca had taken the lead when Frenkie De Jong was accidentally tripped by Layvan Kurzawa in the box; Lionel Messi subsequently made no mistake from the spot.

But the Spaniards' lead only lasted briefly until Mbappe's magical footwork gave him an opportunity to slam home from close range.

The French superstar was at it again in the second half, capitalising on a loose ball in the Barca box to slam high into the net.

Everton's Moise Kean then got his name on the scoresheet, heading home a set piece  from close range before Mbappe rounded off his hat-trick with the goal of the evening.

An incisive breakaway found the 22-year-old unmarked on the edge of the box and he curled a stunning finish into the top corner to ensure he would be going away with the match ball.

Wednesday 17th February

Porto 2-1 Juventus - Watch replay

 Porto shocked Juventus in the first leg of their Round of 16 Champions League encounter to take a deserved 2-1 lead in the tie.

The Portuguese giants scored inside the first minute of each half, punishing sloppy goalkeeping from former Arsenal man Wojciech Szczęsny both times, to put Juve on the back foot.

It was a poor display from Andrea Pirlo's men who were dismal throughout, barely deserving their crucial away goal that came in the 82nd minute through Federico Chiesa.

The home side will be delighted to have a lead to protect ahead of the reverse fixture in Italy in three weeks' time, although manager Sergio Conceicao may feel his side could come to regret a late lapse to let the Italians score an away goal.

Sevilla 2-3 Borussia Dortmund- Watch replay

Dortmund ripped up the form book to secure a brilliant win against Sevilla thanks to a brace from Erling Haaland.

The Germans got off to a stinker, conceding just minutes into the game when former Liverpool man Suso's effort deflected off Mats Hummels and into the net.

But Dortmund came roaring back, equalising through Mohamed Dahoud's long-range beauty before Haaland took over to stamp his mark on the game.

His first came about after a neat interchange with Jadon Sancho, beating the keeper through sheer desire to poke a chipped through ball home.

And the Norwegian striker doubled his tally 15 minutes later, sliding a precise finish into the far corner to round off an incisive Dortmund counter-attack.

Luuk de Jong scored the only goal of the second half to give the Spanish hosts some hope heading into the second leg but in truth it was more than they deserved after a poor performance.