Penalty Munster. Keatley sticks it into the corner. Big, big moments, these.

Glasgow have the ball but they're under immense pressure, going through phase after phase in their own 22.

Eventually George Horne hoists it clear but it's not very far into the wind, and Munster come at them again.

Ian Keatley's first act off the bench is to send a probing diagonal kick in behind the Glasgow defence. Brandon Thomson slips as he tries to rescue it, and after a bit of grappling, the upshot is a Munster scrum just inside the away 22.

On come Arno Botha and Ian Keatley for Chris Cloete and JJ Hanrahan.

A special moment for Chris Fusaro too, who becomes the ninth player to make 150 Glasgow appearances off the bench, Adam Ashe departing.

Colin Gregor
Former Scotland sevens captain on Radio Scotland

It's a 50-50 but Peter Horne shows more aggression and just wrestles the ball away. Suddenly, Thomond Park has gone very quiet.

Glasgow have a penalty advantage off the line-out drive.

Adam Ashe is just bundled into touch at the corner, but back we go from the infringement, and it'll be another Warriors line-out five metres from the try-line.

Really good stuff from Glasgow, who again win back the restart and go through some phases.

A good Bhatti carry earns a penalty, which Thomson punts to the corner.

Is there a bonus-point try on the horizon here?

Stephen Archer replaces John Ryan up-front for the hosts.

The Irish fly-half cuts the gap to seven points. A minute left on Chris Cloete's sin-bin.

Andy Burke
BBC Sport Scotland

Nick Grigg has not had a great time of it lately. His Glasgow form meant he broke into the Scotland squad last year but his omission from Gregor Townsend's autumn Test group is a reflection of where his game has been lately.

However, the stocky wee centre looks to be finding some of his best stuff here. He's made several searing breaks, and while he has been guilty of forcing a couple of off-loads, he is causing Munster all sorts of problems.

Big defensive set from Glasgow after the 5m scrum.

CJ Stander gets wrapped up and felled, and Munster spill the ball forward. Good pressure from Jamie Bhatti over the ball.

Despite the numerical advantage in the scrummage, it's Munster who win the penalty. Hanrahan goes for goal.

Some substitutes to tell you about too. Rory Hughes off for the visitors and Brandon Thomson on.

Munster try-scorer James Cronin is off, replaced by Dave Kilcoyne.

So close to a Munster try for JJ Hanrahan, who jinks and slaloms his way over the line.

He's all alone, though, and a combination of Jackson, George Horne and Hughes hold him up.

It looked for all the world like a five-pointer.

Image source, Inpho

Colin Gregor
Former Scotland sevens captain on Radio Scotland

Strong so far from Glasgow. They needed the points from that period of pressure and it's thoroughly deserved from Matt Fagerson.

Munster disrupt the maul pretty well, and there are players popping up and tumbling over in all directions. Dan Jones stops play and gives Glasgow the scrum.

Unsurprisingly with a man advantage, Warriors win the penalty at the set-piece and reset for another crack.

Warriors are turning the screw. With Munster down to 14 men, they chip the ball into the corner and will go for a try from the line-out.

Colin Gregor
Former Scotland sevens captain on Radio Scotland

Another breathtaking attack from Glasgow after a cracking turnover, then Nick Grigg almost from one 22 to the other. Is Jackson in control? It's like he tried to get the ball down with his leg as it slipped from his grasp after that collision.

...and breathe.

Jackson lost control of the ball amid a cracking try-saving tackle from Peter O'Mahony and Billy Holland.

Off the ball, Chris Cloete has tackled Adam Ashe into the corner flag.

It's a penalty and a yellow card for the Munster flanker.