Match ends, St. Mirren 0, Dundee United 3.
Chris Erskine was on target for the second week running as Dundee United overcame struggling St Mirren.
The midfielder had one of the first half's few chances with John McGinn's header saved at the other end.
Erskine did find the net at the start of the season half, finishing with composure after getting beyond St Mirren's backline.
Jaroslaw Fojut headed the Tangerines' second before Blair Spittal emphatically struck their third.
Jackie McNamara's side remain third in the division - a point behind leaders Inverness Caledonian Thistle - while the Buddies are once again only kept off bottom spot by Ross County's inferior goal difference, despite no league goals so far for Tommy Craig's team.
Erskine was foiled by Marian Kello's brave save early on with the St Mirren stopper coming off his line to block at the attacker's feet.
McGinn was the latest Buddies player attempting to end their league goal drought but his downward header was turned over by goalkeeper Radoslaw Cierzniak.
And, from the resulting corner, Jason Naismith headed across the face of goal.
However, on a day when all five Premiership fixtures remained goalless until the break there was precious little for fans to get excited about before their half-time refreshments.
That all changed in the second period as St Mirren almost went ahead in the preamble to United's opener.
Callum Ball turned towards goal and the shot looked to be creeping over the line until Keith Watson stretched out to clear.
And within moments the visitors were ahead as Erskine raced away from the Buddies defence and confidently swept the ball past Kello.
Having gone behind just when they were behinning to impose themselves, St Mirren tried to regain their momentum but neither Jeroen Tesselaar nor Kenny McLean could hit the target when presented with chances.
Given St Mirren's lack of goals, a second for United was always going to give the hosts a mountain to climb and that proved to be the case.
Gary Mackay-Steven's inswinging corner from the right was nodded powerfully into the net by Fojut for his first United goal.
Ryan Dow was denied by Kello as St Mirren continued to toil and a third goal would soon arrive.
Spittal chested down a loose ball as he ran into the penalty area and unleashed a powerful half-volley past Kello.
- 4McAuslandSubstituted forKellyat 89'minutes
- 17DrurySubstituted forTealeat 80'minutes
- 13OsbourneSubstituted forWyldeat 70'minutes
- 12WatsonBooked at 60minsSubstituted forSparkat 71'minutes
- 11Mackay-StevenSubstituted forBilateat 70'minutes
- 17ErskineSubstituted forSpittalat 81'minutes
- Bobby Madden
- Shots on Target
Second Half ends, St. Mirren 0, Dundee United 3.
Attempt saved. Blair Spittal (Dundee United) left footed shot from the left side of the box is saved in the bottom left corner.
Foul by Kenny McLean (St. Mirren).
Nadir Ciftci (Dundee United) wins a free kick on the right wing.
Substitution, St. Mirren. Sean Kelly replaces Marc McAusland because of an injury.
Attempt missed. Ross Caldwell (St. Mirren) header from the centre of the box is too high following a corner.
Corner, St. Mirren. Conceded by Jaroslaw Fojut.
Delay over. They are ready to continue.
Delay over. They are ready to continue.
Delay in match Marc McAusland (St. Mirren) because of an injury.
Goal! St. Mirren 0, Dundee United 3. Blair Spittal (Dundee United) right footed shot from the centre of the box to the top right corner.
Foul by John McGinn (St. Mirren).
Paul Paton (Dundee United) wins a free kick in the attacking half.
Attempt missed. Conor Townsend (Dundee United) left footed shot from outside the box is too high from a direct free kick.
Foul by Eli Plummer (St. Mirren).
Nadir Ciftci (Dundee United) wins a free kick in the defensive half.
Attempt missed. Ryan Dow (Dundee United) left footed shot from outside the box is close, but misses to the left.
Attempt saved. Paul Paton (Dundee United) left footed shot from outside the box is saved in the bottom right corner.
Substitution, Dundee United. Blair Spittal replaces Chris Erskine.