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Lokomotiv play Arsenal Tula next, while Atletico visit Real Valladolid as both return to league action.
There goes the final whistle! Atletico found their shooting boots in the second half as Joao Felix opened the scoring from a rebound and Thomas tapped in following a lovely move. Costa's horror miss in the first half was not punished as the La Liga side's quality shone through, with Lokomotiv limited to just a few chances. It finishes 2-0 to Atletico!
90' + 4' FULL-TIME: LOKOMOTIV MOSCOW 0-2 ATLETICO MADRID
90' + 3' Morata attempts to shield the ball in the left-back area but is brushed aside by Mario, who gets down the flank and crosses, but Oblak hangs on assertively.
90' + 2' OVER! A low cross from the right is deflected to the edge of the box. Lodi gets there first and plays it to Thomas - much to Saul's dismay, who was charging in for a first-time strike - and the midfielder sends his effort over the top.
90' SHOT! Correa gets the ball out of his feet on the edge of the box and snaps a shot at goal, but Guilherme deals with it well and doesn't spill the ball.
88' CROSSBAR! Barinov rises highest to meet a corner from the right and loops a header towards the far corner. Oblak is stranded, but it clips the top of the bar and goes behind!
Á. Correa
Koke
87' Koke now comes off for Correa in Simeone's final change, passing the captain's armband to Oblak.
João Mário
Yellow Card
85' Mario is the latest player to get booked after foul on Lodi out wide.
Hermoso
João Félix
84' Simeone now brings Joao Felix off for Hermoso, adding a third centre-back as he looks to see out the game.
A. Kolomeytsev
F. Smolov
83' In fact, Smolov can't continue and is taken off, with Kolomeytsev coming on as his replacement.
Felipe
Yellow Card
82' Felipe hacks down Smolov and earns himself a deserved yellow card. That was a hefty challenge.
Éder
V. Ignatjev
80' Ignatyev goes off for Eder as Semin chases the game by throwing on an extra striker.
78' SAVE! Lemar nearly has an instant impact, getting away down the left and smashing a ferocious effort towards Guilherme's near post, but the goalkeeper manages to beat it behind!
T. Lemar
Diego Costa
77' Costa, who has looked a shadow of his former self tonight, is replaced by Lemar as Simeone adds a natural wide player to stretch the game.
75' WIDE! Corluka then has a chance to head at goal from the resulting corner, but the Lokomotiv captain can only nod wide under pressure.
73' SAVE! WHAT A SAVE! The ball is crossed from the right and Krychowiak meets it unmarked at the back post. He goes for the bottom corner first-time, but Oblak dives across to make an unbelievable reaction save, before blocking the follow-up shot as well! World-class goalkeeping.
71' WIDE! Smolov cuts in from the left flank and goes for goal from an ambitious angle, but he's not too far away as he lashes his shot just wide of the top corner.
69' OVER! Thomas plays a superb ball over the top for Costa to run onto behind the defensive line. The striker controls on his chest, but he ends up facing away from goal and attempting an overhead kick that flies well over the bar.
67' SHOT! Krychowiak hits a low effort from outside the box that Oblak gets down comfortably to. There was some power on the shot, but not enough to trouble Oblak.
66' CHANCE! Koke thinks he has a shooting chance as he gets into the box, but a smart challenge allows Guilherme - who had come out to meet him - to collect the bouncing ball.
64' WIDE! A corner is headed up into the air and Thomas connects sweetly with a volley as it drops to him on the edge of the box, but it takes a nick off a defender and flies just wide of the bottom corner!
V. Ignatjev
Yellow Card
62' Ignatyev picks up a yellow card after a frustrated challenge on Arias.
61' Atletico had netted 11 goals in their three games against Lokomotiv Moscow in all competitions prior to tonight, scoring an average of 3.7 goals per match against them – their best goals per game ratio against a single team in European competition (min. 3 games). They could be set to continue that trend tonight, having opened the floodgates in the second half.
59' There's a suspicion of offside against Thomas, who looked to be ahead of Costa when the striker squared the ball to him, but replays show he was just on and the goal is allowed to stand!
T. Partey
Goal
58' GOAL!! Thomas makes it 2-0 to Atletico! It's a wonderful, sweeping move and Joao Felix releases Costa into space on the right with a superb ball, before the striker squares to Thomas for a simple tap-in!
Diego Costa
Assist
58' Costa gets the credit for the assist, but Joao Felix's ball from the left to find him in the box was outstanding and so difficult to defend against. The youngster is a real talent.
56' Lodi knocks the ball past Mario and tries to sprint round him, but the winger does well to get his body in between the left-back and the ball and draws a foul.
54' Smolov beats Lodi out wide and cuts inside, looking for a shooting angle. However, he takes a heavy touch on the edge of the box and the ball is hacked away. He really needs to be more clinical with the opportunities he's presented with.
52' Morata motors down the left and keeps his side on the ball as he plays it inside. It's worked back to him and he tries to take his man on, but gets the ball caught under his feet and makes a mess of it.
50' SIDE-NETTING! Thomas floats a free-kick to the back post and the delivery is a little heavy, but Joao Felix latches onto it and tries to steer it back across goal, but can only find the side-netting!
João Félix
Goal
48' GOAL!! Felix gives Atletico the lead! Morata cuts it back to the Portuguese from the right and his first effort is saved, but the youngster follows in and fires the rebound into the ground and past Guilherme! It's 1-0 to Atletico!
46' WIDE! Atletico probe patiently and eventually pick an opening as the ball is played into Koke in the box. He lays it off for Saul, but the midfielder's shot with his weaker right foot is a bit of a swinger and it sails wide of the far post!
46' We're back under way for the second half!
Simeone will feel that his side will surely score if they keep creating chances, however, there is the very real danger that Lokomotiv capitalise on one of their rare counter-attacks and score against the run of play. The sooner Atletico score, the sooner they can force their opponents out of their low block.
There goes the half-time whistle! Atletico have been on top and posed a considerable threat from set-pieces, but they've just not bene able to find a way through. Guilherme has been mostly excellent in the Lokomotiv goal and Costa was guilty of firing over with an empty net ahead of him. It's 0-0 at the break.
45' + 3' HALF-TIME: LOKOMOTIV MOSCOW 0-0 ATLETICO MADRID
45' + 2' OVER! Guilherme comes to the edge of his box to claim a free-kick and gets nothing, but Atletico can't take advantage and Lokomotiv surge into space on the break! It's worked wide to Idowu on the right, but the substitute makes the bizarre decision to go for goal on the volley from a tight angle instead of crossing into the middle and, predictably, sends his effort high over the bar! What a waste!
45' Lokomotiv are pushing men forward in the hopes of snatching what would be a very valuable goal against the run of play before half-time.
43' OVER! Mario finds Krychowiak in the middle of the pitch and the midfielder drives to the edge of the box before smashing a shot at goal, but it swerves over the top of the bar!
41' OVER! A cross is half-cleared to Thomas on the edge of the box and he takes on the shot, but gets right under it and balloons the ball over the bar.
39' WIDE! Saul then attempts a very ambitious effort from distance that bounces wide of the target. That's never troubling the keeper.
38' SAVE! Koke works the ball back to Morata from the right byline and the striker fizzes a low shot towards the bottom corner, but Guilherme is down sharply to palm it away!
37' Oblak shows great composure as he's closed down, putting his opponent on the floor with a little shimmy and setting his team on the front foot.
35' OFFSIDE! Thomas finds Koke, who releases Costa in behind with a lovely dink, and the striker tries to square to Morata but gets it all wrong, playing the ball behind his team-mate. The flag goes up for offside against him anyway.
B. Idowu
R. Zhemaletdinov
33' That change does have to be made, with Zhemaletdinov replaced by Idowu out wide.
31' A couple of players are down at the moment and Zhemaletdinov in particular looks to be struggling. He may well have to be replaced.
T. Partey
Yellow Card
29' Thomas goes in heavy on Zhemaletdinov and picks up the first yellow card of the night.
28' CHANCE! Big chance for Atletico as the ball is slipped down the left for Lodi, who gets to it inside the box. Guilherme is out to deny him, but Koke and Morata both see scruffy efforts blocked as the loose ball breaks to them.
26' OVER! Mario stands over a free-kick and whips it over the wall, but it skims off the roof of the net as it goes over. That wasn't too far away, but Oblak always looked comfortable with his positioning.
25' WIDE! Lodi is denied high up the field by a superb sliding challenge and Lokomotiv break quickly, but Smolov shanks his effort wide as he gets into the box.
23' Simeone's side are playing with Joao Felix behind the two strikers in possession, but when they lose the ball he comes out to the right and Koke pushes out to the left to form a more orthodox 4-4-2.
21' Lokomotiv are growing into the game and Atletico are beginning to get frustrated with their own profligacy, with a few silly fouls creeping into the game.
19' MISS! WHAT A MISS! A corner is flicked on by Joao Felix at the front post and Costa has an empty net at his mercy at the back post. However, the striker somehow fails to connect properly with the ball and sends it over the bar from inside the six-yard box! How has he not scored?!
18' BLOCK! Joao Felix sparks an almost identical attack, but this time he's the provider and Arias crosses into Morata, but the striker is denied by a sliding Howedes.
17' Thomas slides the ball down the right for Joao Felix, who meets it inside the box near the byline. He tries to fizz a low cross into the area for someone to divert home, but Guilherme is alert to it and comes out to claim.
15' Atletico have been dominant in possession so far, but have looked more threatening from set-pieces rather than open play.
13' Atletico try to build an attack of their own, but Costa is eased off the ball as he tries to take a pass on his way into the box.
11' CHANCE! Lokomotiv create their first chance of the game as Krychowiak leads a counter-attack. He spreads the play wide to the left and it's curled into the box, but the cross is just a fraction too high! That attack had Atletico scrambling a little.
9' SAVE! Thomas takes the next corner and it's another good delivery, with Morata meeting it this time and powering his header into the ground and at goal, but Guilherme is there to hold on.
7' CHANCE! Joao Felix slips the ball through for Morata in the box, but the striker can't take it in and Guilherme slides in ahead of the Spaniard to get the ball away, winning a free-kick for his bravery.
5' OVER! Koke's corner from the right is met by an assertive Gimenez, but he can't direct the effort and it sails over the bar.
3' Gimenez launches a long ball from deep that Morata flicks on for Costa, but the flag is correctly raised against the former for offside as Corluka thumps the ball behind.
1' We're under way in Moscow!
However, Atletico have picked up just one victory in their last nine away games in the Champions League (W1 D5 L3), while Lokomotiv have won four of their last six (L2) at home in the competition.
Lokomotiv Moscow have failed to beat Atletico Madrid in each of their three previous meetings in European competition (D1 L2), most recently losing both ties in the last 16 of the 2017-18 Europa League, and the La Liga side have never lost a Champions League game against a Russian opponent (W3 D1).
Yuri Semin names an unchanged side from Lokomotiv's 1-0 league win over Zenit St. Petersburg in their last game, while Diego Simeone makes three changes from Atletico's goalless draw with Real Madrid in La Liga. Trippier, Savic and Vitolo drop out and are replaced by Arias, Felipe and Morata.
Atletico Madrid substitutes: Stefan Savic, Kieran Trippier, Antonio Adan, Marcos Llorente, Angel Correa, Thomas Lemar, Hector Herrera
Atletico Madrid XI (4-3-1-2): Jan Oblak; Santiago Arias, Felipe, Jose Gimenez, Renan Lodi; Koke, Thomas Partey, Saul Niguez; Joao Felix; Diego Costa, Alvaro Morata
Lokomotiv Moscow substitutes: Aleksandr Kolomeytsev, Luka Djordjevic, Stanislav Magkeev, Solomon Kvirkvelia, Brian Idowu, Anton Kochenkov, Eder
Lokomotiv Moscow XI (4-5-1): Guilherme; Vladislav Ignatjev, Benedikt Howedes, Vedran Corluka, Maciej Rybus; Rifat Zhemaletdinov, Dimitri Barinov, Grzegorz Krychowiak, Murilo Cerqueira, Joao Mario; Fedor Smolov
Lokomotiv's 2-1 victory over Bayer Leverkusen in their opening game puts them top of the group, but they face a real battle to maintain that spot against an Atletico side that came back from 2-0 down to draw with Cristiano Ronaldo's Juventus.
Hello and welcome to our LIVE coverage of the Champions League Group D fixture between Lokomotiv Moscow and Atletico Madrid at the RZD Arena in Russia.
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