Visitors win 3-2 on penalties after Scottish Cup last-16 tie finished 4-4
St Mirren led 4-1 at half-time
But Watt, Aarons & Campbell hauled Motherwell level
St Mirren will play Kilmarnock or Aberdeen in quarter-finals
Motherwell 1-1 St Mirren
James McFadden
Former Scotland forward on BBC Radio Scotland
Quote MessageBrilliant play from Liam Polworth. He puts the corner in and it's cleared back out to him. He fakes the shot and brings it back inside, he fakes again, then he smashes it in at the near post
Liam Polworth
Suddenly, Well come to life and, as St Mirren fail to deal with a corner, Liam Polworth's low drive through a sea of legs deceives goalkeeper Vaclav Hladky to level.
Motherwell 0-1 St Mirren
Steven Thompson
Former Scotland striker on BBC Sportsound
Quote MessageThere's a notable difference in energy levels between this Motherwell side before Christmas and how they look now. They looks hesitant and their movement off the ball isn't sharp. A team that are lacking confidence.
Motherwell 0-1 St Mirren
So close to a second for St Mirren and it comes from some great play from on-loan Watford forward Alex Jakubiak.
He sets up Jamie McGrath, but his snatched shot is well saved by goalkeeper Mark Gillespie.
Motherwell 0-1 St Mirren
Jonathan Obika is a powerful presence up front for St Mirren.
The 29-year-old is a man of many clubs, having been on loan to plethora of clubs from Tottenham Hotspur before moves to Swindon Town and Charlton Athletic.
He's beginning to make an impact in Paisley.
Image source, SNSMotherwell 0-1 St Mirren
Steven Thompson
Former Scotland striker on BBC Sportsound
Quote MessageIt's all about the delivery. The delivery from Durmus on the left-hand side was inch perfect. Obika doesn't have to do too much in terms of movement. He's drifted in between the two centre-halfs
Motherwell 0-1 St Mirren
James McFadden
Former Scotland forward on BBC Radio Scotland
Quote MessageDurmus puts the ball in to an area to allow Obika to just run on to it. You would have to say that St Mirren have probably been the better side
Jonathan Obika
After early Well pressure, St Mirren have been edging themselves into the game and take the lead when Ilkay Durmus supplies a fine cross for Jonathan Obika to finish.
That's the English striker's ninth goal of the season.
Motherwell 0-0 St Mirren
Steven Thompson
Former Scotland striker on BBC Sportsound
Quote MessageI get the impression that set plays are going to play an important part in tonight's game
Motherwell 0-0 St Mirren
Well threaten from the first corner and goalkeeper Vaclav Hladky tips over a dangerous header from Tony Watt as the striker impresses in the early stages of his first start.
Motherwell 0-0 St Mirren
Ross McIver finds Tony Watt with a fine pass, but after the striker rounds St Mirren goalkeeper Vaclav Hladky, he is unable to deliver the cross.
Motherwell 0-0 St Mirren
James McFadden
Former Scotland forward on BBC Radio Scotland
Quote MessageThis is a huge game, but it's one that you expect Motherwell to be up for. Mugabi has to relax a bit and not worry about big cross-field passes if they're not on
Motherwell 0-0 St Mirren
It's been a quiet start to the game as the two sides suss each other out.
Motherwell v St Mirren (19:45)
St Mirren get the game under way, playing in their traditional black and white stripes...
Motherwell v St Mirren (19:45)
James McFadden
Former Scotland forward on BBC Radio Scotland
Quote MessageNormally, you would say Motherwell's front line is an advantage, but there have been a few changes to it. If Tony Watt is at it then he'll cause problems. Ross McIver has been doing well in the reserves this season. He's played in a couple of games and scored on his debut, but I like Obika up front for St Mirren too
Motherwell v St Mirren (19:45)
A reminder of tonight's teams...
Motherwell v St Mirren (19:45)
Remember live commentary is about to begin on BBC Radio Scotland 810MW/DAB/online, with Jamie Lyall talking you through the game.
Expert analysis comes from former St Mirren striker Steven Thompson along with ex-Motherwell forward James McFadden.
Image source, SNSMotherwell v St Mirren (19:45)
James McFadden
Former Scotland forward on BBC Radio Scotland
Quote MessageIf they can get through this, Motherwell will fancy their chances against Aberdeen or Kilmarnock in the next round. Winning the cup would be huge for this club and it hasn't for a long time
Motherwell v St Mirren (19:45)
Motherwell manager Stephen Robinson is wary of how much the Fir Park surface will impact the match.
"It probably looks better than what it is until you stand on it," he tells BBC Scotland. "It will have a bearing for both teams, so we'll have to make sure we handle the conditions.
"We like to get the ball down, pass it about and we will like to try and implement our style and game on St Mirren. But they're a team that want to pass it about as well. So it will be no excuse on our part."
Image source, SNSMotherwell v St Mirren (19:45)
Former Celtic, Sunderland, Preston North End, Burnley, Sheffield Wednesday and Fleetwood Town wide man Ross Wallace is on the bench for St Mirren.
Could the 34-year-old, who has signed until the summer, make his debut as a substitute?
Image source, SNS