This man was excellent today. A true captain's performance.

Let's hear what he had to say...

Image source, SNS

Image source, SNS

Kilmarnock's away form trips them up again.

They did win twice against lower league opposition in the League Cup group stages, but away from the comforts of Rugby Park, they've only beat top-flight opposition twice on the road this season.

Homesick.

Michael Stewart
Former Scotland international on BBC Sportsound

Image source, SNS

Warnock will be very happy that Aberdeen have won a game, are through to the semi-finals and have got to Hampden.

They had to start somewhere to build some momentum to avoid being dragged into a relegation fight and also with that victory, they progress to a semi-final.

It's a big result for them against a good side. It was comfortable. The fact they defended properly, an Achilles Heel for them all season, they've not defended well enough, but today they were far better. They didn't give Kilmarnock any easy opportunities and they were able to build from there.

Dons fans won't thank me for putting a dampner on their afternoon, but captain Graeme Shinnie will miss the semi-final after his booking for dissent at the end of the game.

Looking back at the incident, you can understand why the skipper was so upset not to have been awarded a foul.

Image source, SNS

27 years.

Given how well Kilmarnock have performed in the league this term, they were favourites to reach Hampden and end the long wait for a Scottish Cup semi-final.

It will be a huge disappointment for Derek McInnes' men. They look absolutely gutted.

Image source, SNS

Image source, SNS

Neil Warnock is having a good time with the Aberdeen fans out there.

That victory lifts some of the pressure that was building up on the veteran manager.

A huge win for Aberdeen as they progress to the semi-finals of the Scottish Cup.

Kilmarnock's cup curse continues. They haven't reached the last four of this famous old competition since they lifted the trophy in 1997.

Neil Warnock may be waiting for a league win, but his dream of winning the cup is still alive.

Is this the moment the Dons' season turns?

Image source, SNS

Aberdeen spring forward again and the excellent Killian Phillips tries his luck, but Will Dennis makes the save before the offside flag goes up.

We're over the four minutes

One last switch for Aberdeen.

Connor Barron makes way for Leighton Clarkson.

Four minutes of additional time.

Aberdeen are on the cusp of the Scottish Cup semi-finals, but they had injury-time heartbreak last week...

Graeme Shinnie goes into the book for his furious protests.

He feels he was wiped out by James Balagizi, but John Beaton wasn't interested.

Another home change. Ryan Milne is on for Nicky Devlin.

Aberdeen are managing this well. Keeping the ball in the opposite half and not giving Kilmarnock a sniff.

The Red Shed is loud, and for the first time in a while, it's loud with love for their team.

Five to go.

Kilmarnock's 27-year wait for a Scottish Cup semi-final is about to be extended, unless they can conjure up something special.

Image source, SNS

A change up front for Kilmarnock, but it's not the one you might have expected.

Innes Cameron replaces Marley Watkins, while Kevin van Veen watches on from the bench. Curious.

Ester Sokler and Duk are on for Junior Hoilett and Bojan Miovski.

Six games without a goal now the Macedonian striker, but he did pester that Kilmarnock backline effectively today.

BBC cameras just cut to Derek McInnes hunched over with hands on knees.

Last week, he said he was scunnered with VAR. Now he just looks scunnered with his side's performance.

Willie Miller
Former Aberdeen captain on BBC Sportsound

When you've got Armstrong and Kennedy on the field, you know you've got width and quality in these areas. They're difficult to pin down.

From the creativity point of view, they are able to whip balls in and really test defenders.

Unfortunately, with Kennedy not being available and Armstrong going off, it's a big ask to for Kilmarnock to turn this around.

And in search of another lifeline, Derek McInnes rings the changes.

Danny Armstrong, Kyle Vassell and Liam Polworth are replaced by Gary Mackay-Steven, Greg Stewart and James Balagizi.