CLOSE!published at 15:06 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Anthony Ralston bends in a low ball for Adam Idah, who is sliding but fails to hit the target.
He should score there.
Summary
Watch live coverage & listen to Sportsound commentary above
Shankland, Vargas & Nieuwenhof put visitors three up in opening 21 minutes; Frizzell replies before Shankland dinks fourth
Scottish Cup quarter-final draw - Morton v Hearts, Celtic v Livingston, Aberdeen v Kilmarnock, Hibs v Rangers
FT: St Mirren 0-2 Celtic - Scottish Cup holders into quarter-finals with goals from Kyogo & Maeda
FT: Dundee 2-1 St Johnstone - hosts fight back for Premiership win with McCowan penalty & late McGhee strike after Smith opener
CLOSE!published at 15:06 Greenwich Mean Time 11 February
KICK-OFFpublished at 15:04 Greenwich Mean Time 11 February
We go again in Paisley and Dundee.
When's the last-eight draw?published at 15:02 Greenwich Mean Time 11 February
During our pre-match coverage for Airdrieonians v Hearts, which you can watch on BBC One Scotland from 16:30 GMT.
Following the draw, Sportscene will provide live match coverage from the Excelsior.
Postpublished at 15:00 Greenwich Mean Time 11 February
Image source, SNSWho had an Alex Gogic bicycle kick on their bingo card?
Nah, same.
Puskas Award worthy if that goes in.
More composure needed from Deepublished at 14:56 Greenwich Mean Time 11 February
HT: Dundee 0-1 St Johnstone
Brian McLauchlin
BBC Scotland at Dens ParkSince going behind early on, the home side have been by far the better team.
A little bit more composure in front of goal is all that's needed for Dundee to draw level.
That said, Saints always look dangerous on the break with the pace of Adama Sidibeh causing all sorts of problems for the home defence.
Bulldozing Baccuspublished at 14:51 Greenwich Mean Time 11 February
HT: St Mirren 0-1 Celtic
Andy Burke
BBC Scotland at SMISA Stadium
Image source, SNSWWE fans from the 90s will recall how it was always the poor Spanish announcer's table that got demolished when some flying wrestler was sent careering into it.
The VAR pitchside monitor was left in similar shape after Keanu Baccus collided with it and there's a chap on the technical staff working furiously to reconstruct it.
HALF-TIME Dundee 0-1 St Johnstonepublished at 14:49 Greenwich Mean Time 11 February
Despite Dundee dominating almost every aspect of this game, it is St Johnstone who have the lead in this Tayside derby.
The hosts have had more shots, more possession, more chances - but they have just lacked that final touch to force the ball past Dimitar Mitov.
St Johnstone have had three chances, scoring the first they created when Matt Smith curled in from outside the box.
That's the difference so far. A brilliant game at Dens so far.
Image source, SNSHALF-TIME St Mirren 0-1 Celticpublished at 14:49 Greenwich Mean Time 11 February
We've got a cup tie.
Kyogo's first-time finish has Celtic one up in Paisley, but St Mirren are right in this.
Ouch!published at 14:47 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Brave stuff from Stephen Welsh as he clatters into the post while defending a corner.
Ouch indeed.
Postpublished at 14:47 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC SportsoundLove to see it!
That's brilliant from Gogic, real quality.
The save too is great, Hart looked beat.
GREAT SAVE!published at 14:46 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Alex Gogic, where have you pulled that fae?!
The St Mirren defender attempts a stunning bicycle and Joe Hart gets down to his right to tip away.
Postpublished at 14:45 Greenwich Mean Time 11 February
Dundee 0-1 St Johnstone
A St Johnstone ball over the top sees Adama Sidibeh burn past Joe Shaughnessy.
He cuts back on to his right and shoots, but Shaughnessy is able to track back and block behind.
The wheels on Sidibeh, by the way.
YELLOW CARDpublished at 14:45 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Luis Palma is in the book for a dive.
Quite right, the Celtic winger is never getting a penalty for that.
It's really poor, to be honest.
Back among the Kyo-goalspublished at 14:43 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Zooming in to try and work out whether Kyogo's had a wee trip to Turkey or is that a gumshield?
Image source, SNS
Image source, SNSPostpublished at 14:40 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Hmm, we could have a VAR issue at St Mirren.
Keanu Baccus has just flown right into the pitchside monitor and pretty much demolished it in the process.
Image source, SNSCLOSE!published at 14:39 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Luis Palma drives to the bye-line and dinks one in.
Daizen Maeda meets it but steers just wide.
GREAT SAVE!published at 14:38 Greenwich Mean Time 11 February
Dundee 0-1 St Johnstone
Almost a second for St Johnstone.
Joe Shaughnessy's clearing header is terrible, coming straight to Benjamin Kimioka, and his flash shot is superbly tipped over by Trevor Carson.
That's only the visitors second chance but they almost double their lead.
CLOSE!published at 14:37 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Adam Idah spins and hits from the edge of the box.
A slight deflection takes the shot just wide of the right-hand post.
Image source, SNS'Celtic showing intense side'published at 14:37 Greenwich Mean Time 11 February
St Mirren 0-1 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC SportsoundCeltic's intensity is there today.
It's when they come off that the criticism and the comparison from last season comes from the fans.
CLOSE!published at 14:36 Greenwich Mean Time 11 February
Dundee 0-1 St Johnstone
A good chance for Scott Tiffoney as the Dundee midfielder cuts inside.
Running at almost full pace, he can only drag his shot wide from just outside the box. They just need that final touch.