Celtic 0-2 Sparta Praguepublished at 52 mins
Jeremie Frimpong shows some impressive skill wide on the right but his cross is comfortably gathered by Sparta keeper Nita at his near post.
Summary
Lukas Julis fires home from close range with the home defence all at sea before he guides home a second
Substitute Leigh Griffiths turns in rebound but Julis completes hat-trick just minutes later. Ladislav Krejci nets fourth
Celtic now bottom of Europa League group with one point
FT: Benfica 3-3 Rangers
Celtic 0-2 Sparta Praguepublished at 52 mins
Edouard spurns chancepublished at 49 mins
Celtic 0-2 Sparta Prague
Celtic come forward again but striker Odsonne Edouard screws his effort well wide of goal.
The hosts look flat and badly in need of a creative spark from somewhere.
Celtic remain slugglishpublished at 48 mins
Celtic 0-2 Sparta Prague
Celtic winger Mohamed Elyounoussi tries to spark an attack by the hosts but Sparta Prague look comfortable with anything thrown at them.
Bain almost gifts Sparta third goalpublished at 47 mins
Celtic 0-2 Sparta Prague
Celtic goalkeeper Scott Bain almost gifts the visitors a third goal. The Celtic defence continues to look anything but confident.
KICK-OFFpublished at 21:00
Celtic 0-2 Sparta Prague
We're back under way at Celtic Park.
Can Celtic respond?published at 20:59
HT: Celtic 0-2 Sparta Prague
You'd imagine Neil Lennon would have had some choice words for his Celtic side's defending... and a lack of cutting edge in front of goal.
Two goals down at the break and only a point from their opening two games in the group.
They'll be looking for a response.
'Architects of their own downfall'published at 20:57
HT: Celtic 0-2 Sparta Prague
James McFadden
Former Scotland forward on BBC Radio ScotlandQuote MessageCeltic have been the architects of their own downfall. Their passing has been hopeless. They have to come out flying now in the second half they've got nothing to lose.
'Celtic can't defend'published at 20:53
HT: Celtic 0-2 Sparta Prague
Pat Bonner
Former Celtic goalkeeper on BBC SportsoundQuote MessageThis is embarrassing for Celtic. It's one mistake after another for the goals. Sparta must think that there's more goals in this because Celtic can't defend.
'Celtic in dire straits'published at 20:51
HT: Celtic 0-2 Sparta Prague
Michael Stewart
Former Scotland midfielder on BBC SportsoundQuote MessageTotally uninspiring. It's the polar opposite of the game on Sunday [the Scottish Cup victory against Aberdeen]. All the momentum from that game has gone. This leaves them in dire straits in terms of the Europa League.
'Schoolboy defending'published at 20:49
Celtic 0-2 Sparta Prague
James McFadden
Former Scotland forward on BBC Radio ScotlandQuote MessageThat's schoolboy defending. Frimpong had just made a big run up the pitch but he's jogging back which puts everyone out of position. It's terrible defending.
HALF-TIME Celtic 0-2 Sparta Praguepublished at 20:48
Sparta Prague have set the cat amongst the pigeons. After a bright opening for Celtic, the visitors have grown in confidence and enjoy a two-goal lead at the break, courtesy of two predatory strikes by Lukas Julis and more than a little slack defending.
Image source, SNSImage caption, Lukas Julis has proved to be a thorn in Celtic's side
GOAL Celtic 0-2 Sparta Praguepublished at 44 mins
Lukas Julis
It's a second goal for the visitors and a second for Lukas Julis before the break as he capitalises on terrible Celtic defending.
Image source, bbc sportGREAT SAVE!published at 43 mins
Celtic 0-1 Sparta Prague
Jeremie Frimpong fires in a low cross for Tom Rogic but the Australian sees his effort saved.
'Elyounoussi unlucky'published at 20:41
Celtic 0-1 Sparta Prague
Pat Bonner
Former Celtic goalkeeper on BBC SportsoundQuote MessageIt's the perfect ball and the perfect run. Elyounoussi does that so well coming in behind the full-back and he's unlucky it hits the bar. The keeper had no chance.
HITS THE WOODWORKpublished at 37 mins
Celtic 0-1 Sparta Prague
Celtic think they've fashioned out an equaliser as Mo Elyounoussi latches onto Ryan Christie's superb diagonal ball.
But the Norwegian sees his effort beat the goalkeeper but clip the crossbar on its way out for a goal kick.
Elyounoussi punches the turf in frustration.
'Sparta defending well'published at 20:36
Celtic 0-1 Sparta Prague
James McFadden
Former Scotland forward on BBC Radio ScotlandQuote MessageSparta Prague have defended really well, especially in the 1v1 situations. Celtic have to be sharper and get the ball into Edouard's feet faster.
Familiar Celtic frailties...published at 20:35
Celtic 0-1 Sparta Prague
Kheredine Idessane
BBC Sport Scotland at Celtic ParkAfter a decent opening 20 minutes or so, Celtic can have no complaints about being behind. There was a five-minute spell in which Sparta peppered the home goal, forcing two saves from Scott Bain and hitting bar and post before finally finding the net. Celtic not protecting the ball enough, and not protecting their own goal enough in Europe, a familiar frailty so far this season.
Czech, matepublished at 20:34
Celtic 0-1 Sparta Prague
Sparta Prague are a goal to the good, capitalising on calamitous Celtic defending following a set piece.
Lukas Julis hammered the ball home to break the deadlock at Celtic Park.
Image source, SNSImage caption, The visitors celebrate Lukas Julis's goal
'Celtic static in the box'published at 20:30
Celtic 0-1 Sparta Prague
James McFadden
Former Scotland forward on BBC Radio ScotlandQuote MessageIt's not even that good a ball in but the Celtic players are static for the flick on and then again when it drop to Julis. Credit to Sparta becuase it has been coming but really poor from Celtic
'The goal has been coming'published at 20:28
Celtic 0-1 Sparta Prague
Pat Bonner
Former Celtic goalkeeper on BBC SportsoundQuote MessageWell how many chances have they had in the last few minutes? Celtic have not been able to defend a set piece properly again.