Raith Rovers 0-3 Dundee - Jordan McGhee nets a brace for visitors; Reghan Tumilty scores for hosts but wrongly ruled out with score at 1-0; substitute Osman Sow nets calm third
Watch on BBC Scotland & online
Dundee finished second in Championship; Raith were third
Second leg on Saturday (KO 19:45 BST)
Winners will play 11th-placed team in Premiership
Raith Rovers 0-1 Dundee
Michael Stewart
Former Scotland midfielder on BBC Scotland
Quote MessageRaith have to use that offside call as motivation. They have a second half to get back into this and a second leg on Saturday
Raith Rovers 0-1 Dundee
We're back up and running in Fife...
HT: Raith Rovers 0-1 Dundee
James McFadden
Former Scotland forward on BBC Scotland
Quote MessageDundee have really tried to go and take the game to Raith. Raith are vulnerable down the sides and Dundee have been able to exploit that in the first half
HT: Raith Rovers 0-1 Dundee
James McFadden
Former Scotland forward on BBC Scotland
Quote MessageTumilty didn't complain too much at the time, but the substitutes were sure it was onside. They'll look at that at half-time and know a perfectly good goal has been ruled out
Jordan McGhee's tidy finish from a glorious Charlie Adam assist is the difference between the sides at the break, but the hosts should be level.
Reghan Tumilty's disallowed effort just before the break was a perfectly good goal and that'll be a sore one to take for Raith, but they have to get that out their head if they're to get back in this one.
Easier said than done, though...
Image source, SNSMcGhee's 22nd-minute finish has the away side ahead at the interval
Raith Rovers 0-1 Dundee
Oh dear. Oh very dear.
The hosts should be level. It's much better from John McGlynn's men as Ross Matthew's cross is hooked goalwards by Lewis Vaughan. Reghan Tumilty finishes off the move, but the linesman's flag is up.
The replay shows he's at least a yard onside. How big a call might that be?
Raith Rovers 0-1 Dundee
John McGlynn is demanding more from his side on the touchline.
The away side look too comfortable, but Liam Fontaine had to be on his toes there to clear a dangerous cross from Daniel Armstrong. The resulting corner comes to nothing.
Raith Rovers 0-1 Dundee
Charlie Adam's big-game experience is certainly being highlighted tonight.
The former Scotland international has been superb so far for James McPake's men.
Raith Rovers 0-1 Dundee
Charlie Adam again causes problems as he pings yet another superb pass into the box.
Jason Cummings gets his head on it, but his connection is all wrong as the ball ends up going into the path of Liam Fontaine who is flagged offisde.
Raith Rovers 0-1 Dundee
Raith are having their fair share of the ball but, in all honesty, they're not doing too much with it.
James McPake's defence look organised and his side seem content to hit the hosts on the break.
Raith Rovers 0-1 Dundee
Image source, SNSJordan McGhee slots home after Charlie Adam's long-range pass found the Dundee man all alone in the box
Raith Rovers 0-1 Dundee
Michael Stewart
Former Scotland midfielder on BBC Scotland
Quote MessageFor all Raith's tidy play, they don't create enough in the final third
Jordan McGhee
Charlie Adam, what a ball that is.
The former Liverpool man has been afforded too much space at times as he pings a 40-yard pass perfectly into the path of McGhee, who ghosts into the area unmarked and finishes superbly.
Image source, BBC SportRaith Rovers 0-0 Dundee
Charlie Adam's deep free-kick finds Jordan McGhee in the Raith box, but his downward header takes a nick and falls comfortably into the arms of Jamie MacDonald.
Cracking ball in from the Dundee captain.
Raith Rovers 0-0 Dundee
Results between the sides this season suggest this should be an even one and that is proving to be the case as the away side enjoy a spell of possession.
The game has calmed down a bit after a frantic start.
Raith Rovers 0-0 Dundee
Much better from the home side in past few minutes as John McGlynn's side start to get a foothold in the game and begin dominate the ball.
Raith Rovers 0-0 Dundee
Some fine defending from the visiting defence as Daniel Armstrong looks certain to smash home from close range after a Jamie Gullan cut back.
But Cammy Kerr slides in to make a vital block.
Raith Rovers 0-0 Dundee
Iain Davidson has made a sketchy start here for the home side.
The centre-back fails to clear his lines and the ball falls to Jason Cummings who drills a strike wide of the far post.
Raith Rovers 0-0 Dundee
Big chance for the away side early on and it's the hosts causing their own problems.
Paul McMullan nips in front of Kyle Benedictus to intercept an Iain Davidson pass on the edge of the box, but the Dundee winger lashes a shot wide of the near post. He should be doing much better.
Raith Rovers 0-0 Dundee
We're underway at a sun-kissed Stark's Park...
Who'll take a first-leg advantage into the weekend?