Joe Hart: Pulled off some nice saves but spend the night in the elongated shadow of his opposite number Lukas Hradecky, who was superb. Seemed frustrated now and again in the first half when looking for a recipient from a short pass from his 18-yard-box. It'd be hyperbolic to say the score would've been "x, y or z" without him, but he didn't really do anything wrong. Stood no chance with Alario's penalty. 6

Anthony Ralston: He's looked quite adept at times this season in the new system under Ange Postecoglou, collecting the ball in the half-spaces and centre of the pitch to build attacks. Tonight though, he lost the ball on the halfway line for Leverkusen's second goal after trying to take the ball on the half-turn and offered little, to no, attacking threat throughout the game. Commitment and desire are never in doubt though, which is the bare minimum required. 5

Carl Starfelt: The Swede came close to scoring his first goal for the club with swivelling shot as Celtic piled on early pressure, but Hradecky stretched his arm to its limit to palm it away from the bottom corner. Not sure he did too much wrong on the night, but it just felt a bit underwhelming and fairly easy for Leverkusen's attack, with a few more slack passes throughout the game. It's probably fair to point out he tracked the wrong man for their second goal too, leaving Wirtz open at the back post. 4

READ MORE: Celtic 0-4 Bayer Leverkusen: Ange Postecoglou's troubles continue as classy Germans run riot at Parkhead

Cameron Carter-Vickers: The American can't be blamed for the penalty concession, that frustration should be directed at IFAB's law-making. It came at such a crucial time in the match too, when he put his body on the line to block the goal-bound effort. Aside from that moment of misfortune, it's hard to say either he or Starfelt impressed given the result, but I don't think he performed badly either. 5

Adam Montgomery: Gave the ball away straight after Leverkusen's second, which nearly lead to an immediate life-sapping third. A tidy run infield at the start of the second half led to a shot with his weaker right foot but the end product didn't match the endeavour. He's learning every game though and is showing consistent signs of promise but it was a tough night at left-back for the teenager, who was filling in for Greg Taylor and Josip Juranovic. 6

Callum McGregor: Back after a few weeks injured and slotted back in as the vast majority would expect. Celtic, quite simply, need him and don't function without him. He couldn't, or didn't, grab the game by the scruff of the beck but he did fine. 6

Tom Rogic: For rogic to do well, Celtic have to be playing well. He's not going to turn the tide of a game and a wave of Tsunami proportions was required to do so tonight. He was far from his creative best this evening and dealt with pretty easily by the Germans. More is needed from him in central midfield when things aren't going Celtic's way, because he and David Turnbull are pretty much guaranteed a start in this system. 4

David Turnbull: Had a complete brain-fart for the opener and after that didn't look like dictating the play in an attacking sense for Celtic. An intercepted pass as Celtic turned over possession with less than five minutes to go until half-time summed up his half. An embarrassing dive at the start of the second half went unpunished, he'll probably feel he was punished enough for his hesitancy for Levekusen's opener, from which he never recovered. 4

Jota: Twisting, turning, and nearly delivering. The best aspect of Jota's play though is that you feel something is possible when he gets the ball. A great effort at the start of the second half saved was well saved but his strike on 72 minutes suggested he had somewhat given up, rather than paint a picture of the confidence that flows through his veins. If he can click with Kyogo, Celtic can trouble opponents again. 7

READ MORE: Neil Lennon brands Celtic 'kamikaze' as he dissects Ange Postecoglou's style

Kyogo: He looked superb in the first 20 minutes but after the concession of the first Celtic looked rattled and unable to service their main man. Perhaps should have scored on one of the first two opportunities that came his way although he was stopped by an incredible recovering tackle for the first chance and a great save was made for the second. He missed a sitter on the hour mark that pretty much sealed the game for the visitors and was subbed with the game done and put in cotton wool for Sunday's trip to Aberdeen. 7

Liel Abada: Tries hard and runs his socks into the ground, but didn't scythe through the Leverkusen defence at all. Was in the right place at the right time at the start of the second half to connect with Jota's parried shot but this time couldn't finish when expected. He, Kyogo and Jota are an exciting attacking three for the fans. 5


Nir Bitton: A few nice passes forward looked nice but his wayward shot with the game entering it's latter stages was the catalyst for many fans to head for home. 3

James McCarthy: Felt like the game totally passed him by after coming on for McGregor with 25 minutes to play. 2

Georgios Giakoumakis and Albian Ajeti: Any rating would be fraudulent given how little a part they played after coming on.