Partick Thistle ended a run of six matches without a victory on Saturday with a stunning first half display against their premiership rivals.
The victory ensured that the Maryhill men now have a seven point cushion over the three sides below them in the Premiership table.
The first 45 minutes saw a confident Thistle drive the ball forward time and again.
Lyle Taylor and James Craigen drew decent saves from keeper Radoslaw Cierzniak before the goal their play deserved arrived 10 minutes before the break.
Stephen O’Donnell handed Thistle the lead with a brilliant curling shot.
Lyle Taylor played a key role with a delightful back-heel that allowed O’Donnell to move inside from the right and curl a cracker past United goalkeeper Cierzniak from 20-yards.
And just before half-time Thistle doubled their lead following a corner which caused panic in the home box.
The ball took a touch off Ryan McGowan and then Fojut before it found its way beyond Cierzniak.
The two-goal lead was no more than Thistle deserved, with United having failed to test Paul Gallacher in the Partick goal.
The second half was a dour affair in drizzling rain, with little inventiveness and a series of injury stoppages punctuating play.
Stuart Bannigan almost made it three for Thistle, whipping a low shot just wide after the 70 minute mark.
The hosts never looked like scoring and even when Henri Anier was given a clear sight of the goal, with just a couple of minutes to go, he blasted well over the bar from six yards out.