RED CARDpublished at 15:38 Greenwich Mean Time
Falkirk 2-2 Partick Thistle
The afternoon is over early for Jags captain Brian Graham after a second booking.
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Dundee 4-0 Airdrieonians - Robertson heads opener, Cameron doubles lead, Adewumi slides in third, then Cameron nets again
Livingston 3-0 Cove Rangers - McGowan volleys in free kick; Yengi nets low effort; then striker adds third
St Johnstone 1-0 Hamilton Academical - Sidibeh deflects in Carey strike
Arfield nets hat trick on second debut as Falkirk lead 10-man Thistle 5-2
Colin Moffat
Falkirk 2-2 Partick Thistle
The afternoon is over early for Jags captain Brian Graham after a second booking.
Livingston 1-0 Cove Rangers
Kenny Crawford
BBC Sport Scotland at Almondvale
A very timely moment for Ryan McGowan to net his first goal of the season.
Cove manager Paul Hartley is at the edge of his technical area urging his side to speed up their attacking play.
Gary Oliver
A Brad Spencer penalty is saved, but the rebound is bundled in.
St Johnstone 0-0 Hamilton Academical
St Johnstone continue to push in their search for the opening goal, but visiting keeper Dean Lyness is equal to Taylor Steven's long-range effort.
Livingston 1-0 Cove Rangers
Big chance for Cove against the run of play!
Findlay Marshall finds himself in behind the Livingston defence, but his tame left-footed attempt is kept out by Jerome Prior.
Lyall Cameron
Disastrous from Airdrieonians.
Kyle MacDonald sells his goalkeeper short with a back pass, allowing Scott Tiffoney to steal in. He cuts back to Cameron, and despite some desperate attempts to block the ball, it ends up in the back of the net.
Ryan McGowan
Reece McAlear's wide free-kick is turned in by Ryan McGowan on the six-yard line.
Not sure how much the Australian knew about it, but he will claim the goal.
Livingston have been all over Cove Rangers, as you would expect, so no surprises that they've taken the lead.
Dundee 1-0 Airdrieonians
Clark Robertson with the first cup goal of the afternoon.
Brian Graham
The Jags have turned it around after losing that early goal.
That takes the 37-year-old striker to 15 for the season.
St Johnstone 0-0 Hamilton Academical
Makenzie Kirk wriggles past a couple of defenders, but Hamilton keeper Dean Lyness is off his line quickly to prevent the shot.
St Johnstone are starting to turn the screw.
St Johnstone 0-0 Hamilton Academical
Queen's Park manager Callum Davidson is yawning in the stands.
It's nothing to do with this game, which has been lively. Maybe he's had a few sleepless nights ahead of tomorrow's trip to Ibrox?
St Johnstone 0-0 Hamilton Academical
Brian McLauchlin
BBC Scotland at McDiarmid Park
Hamilton look nothing like a team struggling near the bottom of the Championship.
Livingston 0-0 Cove Rangers
Stevie May drags his shot just wide from the edge of the area after a sweeping Livingston attack.
They've been the dominant side in the opening exchanges. Cove Rangers are hanging on...
Clark Robertson
Dundee have fired a few warning shots in the last couple of minutes, and now they've got their reward.
It's a simple goal, a floated corner that Robertson heads back across goal. It won't be one Kieran Wright will want to see back, as he leaves the ball for Lewis McGrattan on the line to clear.
McGrattan leaves it, and the ball bounces softly into the net.
St Johnstone 0-0 Hamilton Academical
Hamilton fans aren't best pleased at the moment, as the banner below illustrates.
There's also a nice River Plate tracksuit on show, if that's your kind of thing.
Dundee 0-0 Airdrie
Jane Lewis
BBC Sport Scotland at Dens Park
Airdrie don't have good memories from their League Cup visit to Dens in August. A 6-1 defeat. Lately Dundee know how that feels, I'm hoping for a good old fashioned cup tie here.
Logan Chalmers
All square again as a fierce, low shot from Logan Chalmers squeezes in.
Falkirk 1-0 Partick Thistle
That Scott Arfield goal was timed at 45 seconds...
St Johnstone 0-0 Hamilton Academical
Huge chance for Hamilton to take the lead.
Nikolay Todorov stretches at the back post after a corner is flicked on, but he can't quite get a touch that would have put the visitors in front.
Needed longer studs.
St Johnstone 0-0 Hamilton Academical
Brian McLauchlin
BBC Scotland at McDiarmid Park
There is a decent home support inside McDiarmid Park and after three successive victories there is undoubted confidence in the squad.
Accies boss John Rankin says this is a "free hit" for his team and they go into the game with nothing to lose. There is though a place in the quarter finals up for grabs.