Substitute Ricco Diack hit a late equaliser as Partick Thistle came from behind to draw 1-1 in their cinch Championship match at Morton.

Morton had the ball in the net through Iain Wilson’s header in the 24th minute, but it was disallowed for offside before Robbie Crawford’s rising shot was tipped over by Jamie Sneddon.

The hosts eventually went in front in the 32nd minute when Crawford diverted the ball in from close range at a corner, with Jags defender Jack McMillan credited with the final touch for an own goal.

Partick were back on level terms with 15 minutes left when Diack, who had only just come on, drilled in a low shot after good build-up play from fellow substitutes Tomi Adeloye and Scott Robinson.

Adeloye, on loan from Swindon, saw a late effort hit a post and Ben Stanway had a penalty shout turned down in stoppage time as third-placed Thistle had to settle for a point.