Archie Campbell's missed penalty proved costly as Morton were held to a goalless draw at Partick.

The striker had the chance to break the deadlock in the 60th minute but failed to hit the target, firing his spot-kick high over the bar after striker Peter MacDonald had been felled by Stephen O'Donnell inside the box.

Defeat would have been harsh on Partick, who dominated possession for the majority of the match without creating many clear cut chances.

Striker Kris Doolan squandered their best chance of the first half, ballooning a volley over the bar from six yards out.

And following Campbell's miss, midfielder Paul Cairney had the chance to clinch all three points for Partick, but he volleyed Chris Erskine's inswinging corner wide of Colin Stewart's left-hand post.