Livingston manager David Martindale insists it is "definitely not over" despite his side taking a comfortable lead into the home second leg of the Scottish Premiership Play-off semi-final after brushing aside Partick Thistle.

Goals either side of half time from Scott Pittman and Danny Wilson give the Championship runners-up the advantage going into Friday's reverse fixture.

Thistle, who finished fourth, set up the semi-final meeting in sensational fashion, coming from behind against third-top Ayr United in Friday’s second leg thanks to Brian Graham's 100th goal for the club in the 88th minute.

Co-manager Mark Wilson retains "belief" in an even more unlikely comeback, but their exploits at Somerset Park appeared to take their toll as they were exposed by a fresh Livingston who have not played since losing at home to Thistle on 2 May.

Wide man Robbie Fraser, on loan from Rangers, found space down the left and picked out Pittman, with the veteran midfielder slotting Davie Martindale's side into a first-half lead.

Arguably, it came against the run of play - after Thistle spurned chances through Graham and Robbie Crawford - but it should have been added to when winger Cristian Montano tried to lift the ball over home goalkeeper David Mitchell but got his angles wrong.

There was no such trouble for centre-half Wilson, who lashed in a second for the Lions soon after the break.

From there, Thistle - led by interim co-managers Mark Wilson and Graham - offered very little until centre-half Lee Ashcroft crashed a long-range effort off the crossbar and Graham uncharacteristically skied a shot over the bar with the goal at his mercy.

The Jags, once again, will have to come from behind in Friday’s second leg in West Lothian - live on BBC Scotland - if they are to reach the Premiership play-off final against the team who finishes 11th in the top flight.

Partick Thistle co-manager Mark Wilson: "Nothing quite went right for us tonight. I don't think we had enough intensity in or out of possession.

"Disappointing that we didn't score at the end, but I thought they were the better team. I'm not being too harsh on our players, because it's been a long road and they've dug deep time and time again.

"The players have got a lot of belief in each other. They know they can do it. You get the first goal and the tie swings again with the pressure on Livi."

Livingston manager David Martindale: "The result's there, the performance was okay. It sets us up for a great start on Friday night, but it's definitely not over.

"I never felt we were under any real threat to be honest. They never really built the game. We built the game really well at times and when you do that, you create chances."