Scott Tiffoney tests Inverness keeper Mark Ridgers, who manages to keep a hold of the attacker's effort.

A cross finds Billy Mckay at the back post and he squares it to Austin Samuels.

Mckay is deemed to be offside but Samuels wasn't to know that as his close-range effort somehow hits the bar and not the back of the net.

Jamie Sneddon - what a save!

Kirk Broadfoot meets a corner with a powerful header that looks destined for the net, but Sneddon gets his hand to it and shows great strength to claw it away.

Inverness don't look nervy at all as they continue to play the ball out from the back with a great deal of composure.

Tunji Akinola flattens Billy Mckay in the middle of the park and they win a free kick for their troubles.

Partick Thistle create two chances in the space of about 40 second-half seconds.

They know that if they don't get the next goal it's all but over for them.

Alex Jakubiak and Kyle Turner are on for the second half for Partick.

Cammy Smith and Stuart Bannigan make way.

Expect Partick to really have a go in this 45...

BBC Scotland pundit Carl Tremarco reckons Partick aren't out this yet.

Reminding us that Real Madrid looked down and out before two goals came in the blink of an eye against Manchester City midweek.

Ian McCall needs to start raising an eyebrow à la Carlo Ancelotti quickly then...

Stuart Kettlewell
Former Ross County manager on BBC Scotland

Caley Thistle go into the interval having stretched their advantage in the tie through Austin Sameul's powerful strike.

The away side have been a constant threat with the majority of the game's best chances and a Brian Graham strike smacking off of the bar.

A huge second half coming up!

Image source, SNS

Again, it's Brian Graham who nearly connects with a corner kick.

He fails to reach to ball but Inverness are certainly living dangerously right now.

What a save!

Mark Ridgers is at full stretch to deny Brian Graham's close-range header.

Partick have responded well to going a goal down and are continuing to keep the pressure on the home side.

Ross Docherty goes for an acrobatic attempt after a corner isn't dealt with by Inverness.

Brian Graham reacts first but his instinctive strike crashes off of the bar.

Nearly the perfect response from the away side!

Brian Graham makes some space for himself on the edge of the Inverness box after a neat turn but his effort curls wide of goal in the end.

Partick Thistle have managed to regain some control of the game and are looking much more settled than the opening 10 minutes.

An Inverness corner is floated out to Sean Welsh on the edge of the box who has bags of time to settle himself for the strike.

It is ultimately blocked before a Shane Sutherland strike from a similar position is dealt with too.

Scott Tiffoney looks in the mood tonight.

Everything positive from Thistle in the last few minutes has gone through the 23-year-old.

Robbie Crawford gets on the end of a brilliant ball from Scott Tiffoney.

Diving towards the ball around the penalty area, Crawford goes agonisingly close for the away side.

Billy Mckay's cross is cleared but not far enough as it drops to Robbie Deas, who fires it over the bar for the home side.

Moments later Sean Welsh clips in a free-kick but Partick deal with the cross.

Inverness are beginning to look threatening.