GREAT SAVE!published at 31 mins
Alloa Athletic 0-1 Celtic
A tougher test for David Hutton this time as the Alloa goalie does well to cover his near post and keep out a fierce shot from Daizen Maeda.
Listen to Sportsound commentary of Alloa v Celtic
Giakoumakis slams in & Abada lashes in second before Sammon pulls one back
Alloa's Niang escapes red for ugly lunge on Ideguchi - he joins McGregor & Abada in going off injured
Kelty knock out holders St Johnstone; Dundee Utd edge past Kilmarnock & Motherwell beat Morton in extra time
Aberdeen, St Mirren & Dundee beat lower-league opposition; Livingston overcome County
Colin Moffat
Alloa Athletic 0-1 Celtic
A tougher test for David Hutton this time as the Alloa goalie does well to cover his near post and keep out a fierce shot from Daizen Maeda.
Alloa Athletic 0-1 Celtic
Tom Rogic manages to steer a low cross on target but it's a comfortable save for David Hutton.
Alloa Athletic 0-1 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Quote MessageAlloa have had no possession at all, they are just chasing after the ball and that is very tiring and frustrating
Alloa Athletic 0-1 Celtic
Every home player is camped in their own half as Celtic knock the passes around looking for a gap to exploit.
The ball is moving quite slowly on the sticky artificial surface.
A seven-goal thriller comes to a close after Iain Anderson's late, late winner.
Iain Anderson
The League 2 side snatch it right at the end of extra-time!
Iain Anderson with a header to send the small band of away fans home happy.
Alloa Athletic 0-1 Celtic
Giorgos Giakoumakis is through with just the keeper to beat but he can't make it a quick-fire double as his awkward, scooped shot trickles inches wide.
Giorgos Giakoumakis
Liam Scales fizzes in a peach of a cross from the left and there is Giorgos Giakoumakis storming in at the front post to volley home in style.
Robert McCarthy
It looks like they're going to penalties at Holm Park too.
Peterhead 2-2 East Kilbride (AET)
The League 1 side scrape through via spot-kicks.
It was 5-3 with Russell McLean stroking in the decisive penalty.
The Scottish Premiership side complete a dramatic comeback, with Liam Donnelly smashing in the winner in the dying moments of extra-time.
Morton defended gallantly throughout and their keeper Jack Hamilton was in inspired form but Donnelly's late strike was out of his reach.
Motherwell had the majority of the ball, and the chances, all afternoon but left it late to take any of them.
Motherwell's Kevin van Veen makes it 1-1 form the spot
Alloa Athletic 0-0 Celtic
And away we go for the final match of the Scottish Cup fourth round.
Dylan Levitt's extra-time winner settles a tight Scottish Cup tie the way of Dundee United as they edge past Kilmarnock at Rugby Park.
Marc McNulty had given the Premiership side an early lead, but their Championship hosts were soon level through Rory McKenzie.
And the home side had the bulk of the chances but could not find a second and into extra-time it went.
But Levitt's cool finish earned Thomas Court's side a last-16 spot.
Liam Donnelly
Motherwell go through on goal with van Veen leading the charge, the ball falls to Donnelly at the edge of the box and his powerful drive flies into the roof of the net.
Just moments before, Morton had cleared a van Veen shot off of the line.
FT: Peterhead 2-2 East Kilbride (AET)
Spot-kicks will settle this one.
Oh my. The Scottish Cup holders are out and that's a 10th successive defeat for the Perth side.
Kallum Higginbotham is the goal hero for the League 2 leaders.
Kelty Hearts 1-0 St Johnstone
Another extra-time chance goes begging for Kelty!
Ross Philp cuts inside onto his right foot in the St Johnstone box but his finish is tame.
Morton 1-1 Motherwell
A Motherwell set-piece is floated in and the ball ping-pongs around before Morton are awarded a free kick.
Which they are in no hurry to take...
Kilmarnock 1-2 Dundee United
In three of the last four seasons, Kilmarnock have suffered Scottish Cup woe late on at home, and they're heading that way again.
Last season, after a 3-3 draw with St Mirren, they lost on spot kicks to St Mirren.
The season before, Derek McInnes' Aberdeen beat them 4-3 in extra-time.
And in 2017-18, McInnes again inflicted pain on Kilmarnock with a penalty shoot-out win at Rugby Park.
Can his presence in the home dugout help change their fortunes this time? They are running out of time.
Kilmarnock 1-2 Dundee United
Kilmarnock almost hit back as Rory McKenzie's shot is blocked then Blair Alston puts the rebound wide.
Ash Taylor then knock the ball wide from a corner kick wide as well.