Postpublished at 17:29 Greenwich Mean Time 11 February
Airdrieonians 0-3 Hearts
We haven't even played half an hour yet.
To say this looks ominous for Airdrie is an understatement.
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
Nick McPheat
Airdrieonians 0-3 Hearts
We haven't even played half an hour yet.
To say this looks ominous for Airdrie is an understatement.
Airdrieonians 0-3 Hearts
Kenneth Vargas lifts the ball over the head of his marker and it opens up for the Hearts man.
But he can't get a shot away.
Airdrieonians 0-3 Hearts
Yep, Craig Halkett will need to come off here.
He can't catch a break. Kye Rowles is on.
Airdrieonians 0-3 Hearts
Uh oh... Craig Halkett is in bother.
The Hearts centre-back is down on the turf and doesn't look happy about something.
Airdrieonians 0-3 Hearts
Neil McCann
Former Hearts winger on BBC One Scotland
Doesn't he hit it well.
This is a wee bit surreal for the big travelling support.
Calem Nieuwenhof
Pingggg.
Airdrie heads are spinning as Calem Nieuwenhof lasers a shot into the bottom-right corner from the edge of the box.
That may well be game over already.
Airdrieonians 0-2 Hearts
Neil McCann
Former Hearts winger on BBC One Scotland
What a pass from Craig Halkett. It's absolutely lasered, it's so true.
Quarterback-esque on Super Bowl night.
A brilliant goal again from Hearts.
Kenneth Vargas
That's all about Craig Halkett.
The Hearts centre-back pings an absolute beauty of a ball over the top to Kenneth Vargas, whose shot is saved back on to him and it ricochets over the line.
Airdrieonians 0-1 Hearts
Really good work from Lewis McGregor to win a corner on the Airdrie left.
It it comes from Charlie Telfer, it's flicked on then Mason Hancock plants a header off the bar.
What a game!
Airdrieonians 0-1 Hearts
Jonathan Sutherland
BBC Sport Scotland at Excelsior Stadium
Apparently there has been an issue with the trains between Edinburgh and Airdrie today, which has no doubt caused consternation for some Hearts fans trying to get here. Something to do with a signalling system fault.
Despite this, the Jambos who have made it are in fine voice and loved that goal from the star man in Scottish football this season, Lawrence Shankland.
Are they about to watch their side derail Airdrie's cup ambitions?
Airdrieonians 0-1 Hearts
Hearts haven't been very clever since scoring.
They are providing encouragement to Airdrie as Nikolay Todorov is denied at close range superbly by Craig Gordon.
Airdrieonians 0-1 Hearts
Neil McCann
Former Rangers winger on BBC One Scotland
Inevitable, wasn't it?
It's a brilliant goal from Hearts. It's a cracking slide-rule pass into the penalty area and Lawrence Shankland finds space like no-one else.
Lawrence Shankland
A brilliant goal. It really is.
It's liquid football from Hearts. One touch, two touch, all-round free-flowing stuff.
The move ends with Alex Cochrane sliding it into the box and Shankland provides the finishing touch.
Airdrieonians 0-0 Hearts
A fizzer of a cross from Stephen Kingsley is headed away brilliantly.
Craig Halkett then does just enough at the other end to avoid a scare.
Airdrieonians 0-0 Hearts
Safe hands again from Craig Gordon.
He claims it again with no fuss.
Airdrieonians 0-0 Hearts
Hmm, forget that.
Airdrie have indeed got out - now they have another corner.
Airdrieonians 0-0 Hearts
Airdrie can't really get out here.
Airdrieonians 0-0 Hearts
Lawrence Shankland meets an Alex Cochrane free-kick and the Hearts striker is adamant his side should get a corner.
Nope.
Airdrieonians 0-0 Hearts
Alan Forrest decides against a shot at the edge of the box and passes wide to Dexter Lembikisa, whose cross is easy for the keeper.
Airdrieonians 0-0 Hearts
Craig Gordon claims the corner and Hearts get their first spell of possession.