Celtic have won last four Scottish Cups
Falkirk currently leading League 1
Forrest & Griffiths start for Celtic; Falkirk make eight changes
Forrest nets deflected strike to finally breach visitors after break
Christie quickly doubles lead with drive into bottom corner
Substitute Elyounoussi lofts ball over keeper from close range
Dundee 0-1 St Johnstone
St Johnstone goalkeeper Zander Clark comes charging out to the edge of his box and flattens Danny Mullen.
Dundee captain Charlie Adam takes the spot-kick, but Clark atones with a good save, pushing the ball against the post and he gets lucky as it rebounds back into his arms.
Kristian Dennis
The substitute looks to have put the tie out of Hamilton's reach with a brilliant strike.
Dennis picks up possession 25 yards out and curls an unstoppable shot into the top corner.
Image source, BBC SportDundee United 0-1 Partick Thistle
A cross reaches the feet of United's Nicky Clark yards from goal, but the forward can't control the ball and it bounces harmlessly wide.
Russell McLean
Montrose come from 2-1 down to regain the lead in what is proving to be a real thriller against their Highland League hosts.
Image source, BBC SportHamilton Academical 0-1 St Mirren
Big chance for St Mirren.
Striker Jon Obika climbs above Brian Easton to meet Ethan Erhahon's cross with a downward header that bounces narrowly wide.
Jack Fitzwater
The hosts have been pushing and they have an equaliser!
Josh Mullin's corner is headed across goal by Jon Guthrie and Jack Fitzwater does well to squeeze the ball in at the back post. This one's headed for extra time as it stands.
Image source, BBC SportHamilton Academical 0-1 St Mirren
A lull in proceedings gives both sides time to catch their breath after a frantic opening hour.
Can Hamilton - as they did in the league meeting a fortnight ago - find an equaliser?
Devante Cole
Stephen O'Donnell, who was on assist duty for the national team last week, delivers a perfect ball for Cole at the back post who nods home.
Image source, BBC SportDundee United 0-1 Partick Thistle
United turn up the pressure.
Lawrence Shankland breaks free to get on to Marc McNulty's through ball, but goalkeeper Kieran Wright gets a leg to it.
From Ian Harkes' corner, McNulty's shot on the turn is cleared on the line by Stuart Bannigan, who then blocks from Mark Reynolds on the rebound.
United manager Micky Mellon gets himself a yellow card as his frustration grows in the dugout though.
Kevin Smith
The League 1 hosts edge in front in Methil against their Championship visitors.
Image source, bbcKyle Lafferty
Kyle Lafferty does get his hat-trick and this one comes from a Chris Burke assist.
The Ayrshire side are well on their way to the next round.
Image source, BBC SportJordan Roberts
Motherwell are in cruise control.
Devante Cole turns in the box and drags a cross - could've been a shot - towards the back post and Roberts slides in for his second of the game.
Image source, BBC SportStenhousemuir 0-2 Kilmarnock
Kyle Lafferty almost has a hat-trick.
The Kilmarnock forward's header hits off one post then spins out past the opposite one.
Hamilton Academical 0-1 St Mirren
Hamilton really should be level.
Ross Callaghan gallops down the right and plonks a cross on to the head of the unmarked David Moyo, but the striker nods it narrowly over.
A huge miss.
Dundee 0-1 St Johnstone
The home side have the ball in the net from a corner but the whistle has gone for a foul on St Johnstone goalie Zander Clark.
Dundee manager James McPake is not impressed and is promptly booked for his loud complaints from the touchline.
On reflection, it may have been an offside decision against Danny Mullen. Either way, McPake is fuming and his team are still behind...
Dundee United 0-1 Partick Thistle
Seconds into the second half and United should really be level. Lawrence Shankland cuts inside Mouhamed Niang and has a shot blocked, then Marc McNulty's effort on the rebound deflects over.
We're getting under way again around the country.
So far, League 1 outfit Partick Thistle are the ones creating the biggest shock of the day, winning away to top-flight Dundee United.
Meanwhile, second-tier Raith Rovers lead away to Premiership outfit Livingston and Clyde, struggling in League 1, lead away to Ayr from the division above.
How many shocks will we have after the next 45 minutes?
Scottish Cup
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Scottish League 2
Image source, BBC SportScottish Championship
Image source, BBC Sport