62' Azpilicueta nips in well to intercept an Atletico cross at the near post. Chelsea counter and Werner's shot whistles just over the top left corner of the goal.
61' It's astonishing how quiet Chelsea have kept Atletico here. Let's not forget that Atletico are leading LaLiga and Chelsea were floundering a few months ago.
58' Atletico see Chelsea's latest corner out. Chelsea haven't let the visitors relax at all. They've been at them all game.
56' Ziyech forces a great save from Oblak! The Moroccan swivels on the edge of the box and fires towards goal. Oblak tips it over the bar for a Chelsea corner.
55' Chelsea get another corner down their left which Ziyech floats to James to the right of the box. James hits it first-time towards goal only for an Atletico body to make the block.
53' Havertz's cutback for Werner is intercepted. Ziyech's effort is blocked and Rudiger goes for goal from way out, firing just wide.
49' Atletico deal with the corner. Chelsea keep the pressure on though as Havertz is dragged down by Hermoso. Chelsea get the free-kick.
48' Oblak stops Werner from sending Chelsea completely out of sight. Werner makes a great run behind Atletico's defence to reach Ziyech's throughball and test Oblak at the near post. The Atletico keeper keeps it out and Chelsea have a corner.
47' Azpilicueta knocks the ball down the line for Werner to chase and the German keeps it in play. Werner returns it to James whose cross is cleared. Up the other end, Suarez loses out in a challenge with Rudiger, winning a free-kick.
46' Chelsea get the second half going. It'll be interesting to see how Atletico's change of shape affects things here. So far they've been second best.
Chelsea should feel very confident of seeing this tie out but need to be wary of Atletico's potential threat. Atletico need to offer Suarez more support up front. The Uruguayan has failed to score in his five Champions League appearances for Atletico this season and, surprisingly, in his last 24 away games at this level. He isn't the force he was but could still do Chelsea damage.
Chelsea go in at the break after an excellent first 45 minutes in which they've doubled their lead on aggregate. Tuchel's team have had the better of Atletico in this first half, opening the scoring through Ziyech's fine finish. Atletico haven't done much but could argue they should have had a penalty for Azpilicueta's tug on Carrasco.
45' HALF-TIME: CHELSEA 1-0 ATLETICO MADRID (2-0 AGG)
44' Chelsea construct another decent attack which ends with Kovacic curling wide from outside the box. Atletico need to deal with James' constant threat down their left side.
43' Rudiger surprisingly finds himself in the box to blaze over near the byline. Tuchel will be very pleased with how this first half has gone for Chelsea.
42' James is free to fire in a decent ball yet again. Havertz goes down under the challenge of Savic but a corner is all Chelsea will get. Oblak punches it away.
41' Lodi is dealt with well by Chelsea's captain Azpilicueta. Atletico will still feel a bit sore that VAR didn't even take a look at Azpilicueta's pull on Carrasco earlier.
40' Alonso and Havertz combine down the left to give Havertz a shooting opportunity at the near post. Oblak gets in the way of it.
38' Trippier spots Llorente on the underlap and sends the winger free down the right. Llorente's cross isn't met by an Atletico player. Joao Felix has a pop from distance but Kante takes the sting out of it and Mendy gets down to save.
36' Chelsea's goal doesn't change things too much for Atletico who still need two goals to progress on away goals. However, there will be no extra time. The visitors look vulnerable currently though. James sends his best ball so far into Atletico's penalty area but Havertz can't make the most of it.
33' Carrasco drifts inside and looks for Trippier but gets taken out as he does so. Atletico take the free-kick and Kante clears Trippier's cross. Chelsea counter and...
29' Atletico have a free-kick near the halfway line. Trippier sends a lovely flighted ball towards Suarez who is unable to reach it.
27' Trippier's corner is headed away by Havertz. The Atletico right-back tries again and this time sends his cross out for a Chelsea throw-in on the opposite side.
26' Carrasco goes down in Chelsea's box after what looks like a pull from Azpilicueta. The referee isn't convinced and play continues. Zouma steers Llorente's cross behind for a corner. Azpilicueta has got away with that.
24' Chelsea and Atletico are cancelling each other out at the moment. Carrasco tries to make progress down the left but can only run the ball out for a goal-kick.
22' Rudiger muscles Suarez off the ball on the edge of the box. Suarez appeals to the linesman but it's a fair if firm challenge.
21' Suarez gets a sniff of goal but can't keep the ball in play near the byline. The Uruguayan hasn't really been able to influence proceedings yet. There's plenty of time for him to do so though.
20' James is seeing plenty of the ball down the Chelsea right so far. Trippier heads away the Englishman's latest delivery. James soon regains possession and thumps an ambitious effort off target.
19' James gets a cross into the box and Ziyech misses his kick on the swivel. Werner instinctively hits it towards goal under pressure but it's wide of the mark.
18' Joao Felix wriggles through the middle and is about to test Mendy when Kante sticks a foot in to divert the ball to his goalkeeper. That's a good intervention by the Frenchman.
17' Atletico look to be playing more of a 4-2-3-1 with Joao Felix dropping deep and Suarez roaming alone up front. They've seen precious little of the ball so far.
16' Ziyech swings in the corner from the left. Atletico give it short shrift.
15' Suarez tries and fails to beat Zouma with a nutmeg. Azpilicueta sends a ball into Atletico's box and the visitors don't fully clear. Llorente ends up conceding a corner.
14' We're less than 15 minutes in and Chelsea have had 76 per cent possession. You suspect that will be the pattern for most of this game.
13' Gimenez heads out James' cross from deep. Chelsea keep the ball on the opposite side, sending Ziyech into the penalty area but Savic is in the right place to clear it away.
12' Chelsea are starting to find their rhythm after Atletico's promising start. Lodi intercepts James' run and knocks the ball out for a throw-in.
10' Alonso is set free down the left to burst into the box. Werner is in a great position waiting for the cross but the Spaniard elects to go for goal, rolling wide of the left-hand post.
8' Atletico are definitely a more open side than they used to be. Kante surges into space in front of Atletico's back four and looks to dink a pass to a teammate but can only put the ball out for an Atletico goal-kick.
7' Ziyech asks a lot of James bombing down the right. James is unable to prevent Lodi from nipping in and winning a free-kick just outside the box.
5' Chelsea win the first corner of the game down their right. James will take it. The wing-back floats it to no one in Chelsea blue and Atletico get rid of it.
3' Atletico come on the attack again as Suarez is caught offside. Seconds later Carrasco dinks the ball inside to Lodi who forces a routine save from Mendy.
2' Atletico look up for this early on as Trippier gets forward from right-back and flings the ball into the Chelsea box. Llorente has a speculative shot blocked and Carrasco's follow-up cross is cleared. Werner is unable to keep the ball in play up the other end.
1' The Italian referee Daniele Orsato blows his whistle and Atletico get this second leg underway!
The two sides are out on the Stamford Bridge pitch as the Champions League anthem rings out. It never fails to get you excited.
Chelsea have won just one of their three Champions League home matches against Atletico, a 4-0 win in the 2009-10 group stages prior to Simeone's arrival. The one defeat they've had in those games was in the second leg of the 2013-14 semi-final which saw Atletico progress 3-1 on aggregate. Can Atletico summon the spirit of their last LaLiga-winning side here?
Chelsea make five changes from their 0-0 draw away to Leeds United last time out, reverting to a three-man defence. Jorginho and Mason Mount are suspended. There are two changes to Atletico from their own 0-0 draw with Getafe. Lodi and Joao Felix start ahead of Hermoso and Correa.
SUBS: Sime Vrsaljko, Geoffrey Kondogbia, Miguel San Roman, Thomas Lemar, Ivo Grbic, Lucas Torreira, Angel Correa, Vitolo, Mario Hermoso, Moussa Dembele, Felipe, Hector Herrera.
ATLETICO MADRID (4-4-2): Jan Oblak; Kieran Trippier, Stefan Savic, Jose Gimenez, Renan Lodi; Marcos Llorente, Koke (c), Saul Niguez, Yannick Carrasco; Joao Felix, Luis Suarez,
SUBS: Emerson, Callum Hudson-Odoi, Willy Caballero, Billy Gilmour, Kepa Arrizabalaga, Christian Pulisic, Ben Chilwell, Faustino Anjorin, Olivier Giroud.
CHELSEA (3-4-3): Edouard Mendy; Cesar Azpilicueta (c), Kurt Zouma, Antonio Rudiger; Reece James, Mateo Kovacic, N'Golo Kante, Marcos Alonso; Hakim Ziyech, Timo Werner, Kai Havertz.
However, if there's any side that can dig themselves out of a hole it's Diego Simeone's Atletico. The LaLiga leaders have been flagging recently but they have progressed from 50 per cent of the European Cup and Champions League knockout ties in which they've lost the first leg. Who will progress then? We might as well flip a coin, or even better, sit back and find out!
Chelsea's 1-0 win at the Wanda Metropolitano Stadium three weeks ago has put them in pole position to progress to the Champions League quarter-finals. In their entire history of European competition they've never been eliminated in a two-leg knockout tie after winning the first leg away from home. Thomas Tuchel's team look in no mood to change that record now.
Hello! Welcome to our live text commentary of this UEFA Champions League round of 16 second leg match between Chelsea and Atletico Madrid at Stamford Bridge.
