Postpublished at 65mins
Celtic 2-0 Airdrieonians
Oliver Burke has looked out of sorts as the lone striker on his Celtic debut, but here he comes from his more usual wide position.
However, the winger on loan from West Brom lashes his shot well wide.
Scott Sinclair scores twice from close range for Celtic after being denied from the spot
Timothy Weah marks debut with goal to make it three for holders
10-man St Mirren come from two goals down to beat Alloa
Mark McGuigan's header earns Stenhousemuir a draw at Aberdeen
Ross County hold on as Brian Graham's double edges out Motherwell
McCracken header gives Junior side Auchinleck famous win
Clive Lindsay
Celtic 2-0 Airdrieonians
Oliver Burke has looked out of sorts as the lone striker on his Celtic debut, but here he comes from his more usual wide position.
However, the winger on loan from West Brom lashes his shot well wide.
Celtic 2-0 Airdrieonians
Airdrieonians are on the counter attack through Dale Carrick, who has just replaced on-loan Hibs man Josh Campbell.
However, the former Hearts forward is brushed off the ball by the more powerful Dedryck Boyata.
Celtic 2-0 Airdrieonians
A neat flick from Callum McGregor sets up James Forrest deep inside the visiting penalty box, but goalkeeper David Hutton pulls off an excellent reaction save to turn it into the side netting.
Celtic 2-0 Airdrieonians
Jim Duffy
BBC Sportsound summariser
Quote MessageBoyata wins a free header, which ricochets around the six yard line. Again Hutton makes a reactive save, unfortunately for him now twice, it's landed at the feet of Scott Sincair
Scott Sinclair
David Hutton must wonder what he has to do to keep Celtic out.
He makes a fine save as team-mate Josh Edwards deflects a Dedryck Boyata header towards his own goal, but Scott Sinclair reacts first to turn the ball into the net for his second goal of the game.
Celtic 1-0 Airdrieonians
The visitors are putting their bodies on the line as they make block after block inside their own penalty box.
Celtic 1-0 Airdrieonians
Declan Glass comes on for his Airdrieonians debut, the 18-year-old on loan from Dundee United replacing Kyle Wilkie in midfield.
Celtic 1-0 Airdrieonians
Callum McGregor finds some room 22 yards from goal and his curling drive towards the far corner is turned wide by David Hutton at full stretch.
The former Clyde, Queen of the South and Ayr United goalkeeper is having a fine game.
Celtic 1-0 Airdrieonians
The second half starts the same way as the first, with Celtic camped in the opposition half without creating any chances.
Celtic 1-0 Airdrieonians
Airdrieonians get the second half under way. Can they build on that late chance, or will they feel deflated by Scott Bain's triple save?
HT: Celtic 1-0 Airdrieonians
FT: Aberdeen 1-1 Stenhousemuir
Aberdeen manager Derek McInnes thinks Stenhousmuir merited their replay after a 1-1 draw at Pittodrie.
"It's no more than Stenhousemuir deserve," he tells BBC Scotland. "We had the bulk of possession and the better chances, but we were wasteful.
"When you waste chances at 1-0, the opposition will always believe they've got a chance.
"Credit Stenhousemuir, they stuck to their task, waited for that one opportunity and they take it.
"Sporadically, we had good moments, but the taste in your mouth is from the result and it's safe to say we are fortunate to still be in the cup."
FT: Aberdeen 1-1 Stenhousemuir
Stenhousemuir boss Colin McMenamin hopes a draw at Pittodrie can help lift confidence for the rest of the season.
The Warriors, who are stuck at the bottom of League One, earned a replay when Mark McGuigan crashed in a great header on 71 minutes.
"We tried to frustrate Aberdeen and we limited them in the first half," Colin McMenamin tells BBC Scotland. "Second half, we rode our luck a wee bit, but the boys have worked so hard.
"I said we'd get a chance or two and, believe it or not, we've been working on headers.
"It's a huge result. We're a small community club. We had 300 fans here to watch us, which is brilliant. I just hope they start coming to home games now.
"It's something for us to build on and use as we try to climb up the league."
HT: Airdrieonians 1-0 Celtic
Jane Lewis
BBC Sport Scotland at Celtic Park
Celtic deserve their half-time lead, although it took them some time to get going.
Airdrieonians might take some confidence from a solid defensive showing - if that miss at the end of the first half doesn’t play on their mind.
An intriguing second half awaits. Will Celtic up a gear or will the League One side hold on and get lucky?
HT: Celtic 1-0 Airdrieonians
Scott McDonald
Former Celtic striker on BBC Sportsound
Quote MessageNot a lot of clear cut chances until the penalty. I'm not so sure it was a penalty but Hutton does ever so well. You've got to say what a couple of good saves from Scott Bain who came up trumps for Celtic at the end of the first half.
Scott Sinclair recovered from two bad misses - one from the penalty spot and one from point-blank range - to slot Celtic in front.
The cup holders were a bit slow out of the blocks but gradually discovered their rhythm.
Airdrie have been chasing shadows for long spells but will be cursing their luck after that goalmouth scramble just before the half-time whistle
Celtic 1-0 Airdrieonians
The visitors should be level as Scott Stewart bursts into the penalty box and his low cross is met by Kyle Wilkie a couple of yards from goal.
But Scott Bain makes the first of three point-blank saves in quick succession before Celtic amazingly scramble clear.
Celtic 1-0 Airdrieonians
David Hutton to the Diamonds' rescue again as he turns a curling Ryan Christie free-kick over the crossbar.
Can the visitors survive until the break with that one-goal deficit and get a breather?
Celtic 1-0 Airdrieonians
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Quote MessageThis time Sinclair does take his chance. Initially, a great save from Hutton, but he could only knock it into the path of Sinclair. You have to say though it was coming
Scott Sinclair
So unlucky for David Hutton, but it has been coming.
The goalkeeper does well again to get his fingertips to Oliver Burke's low drive, but this time Scott Sinclair makes no mistake from a couple of yards out.