Match ends, Dundee United 1, Partick Thistle 0.
Dundee United maintained their three-point lead at the top of the Scottish Championship after Lawrence Shankland's 17th goal of the season earned victory over Partick Thistle.
The Scotland international headed in Louis Appere's delivery just after the hour at an angst-ridden Tannadice.
Shankland had earlier struck the bar in a game from which bottom side Thistle will feel they deserve something after missing several opportunities.
They remain five points from safety.
United, meanwhile, travel to face third-place Inverness Caledonian Thistle on Saturday and may have to do without winger Peter Pawlett, who was replaced inside the opening minutes with a tight hamstring.
Dundee United head coach Robbie Neilson: "It was a difficult game and credit to Partick. It's a long season and there are going to be games like this where it's about finding a way to win.
"It wasn't pretty but it's another three points. We'll get nothing for free in this league because we are one of the big hitters."
Partick Thistle manager Ian McCall: "We were terrific from start to finish. we certainly didn't deserve to lose. Nearly 90% of the second half was played in their half. I'm incredibly proud of how they played.
"They are playing big bucks for a centre forward and he was the difference because they were hanging on."
- 17RobsonBooked at 55mins
- 25KingSubstituted forStantonat 59'minutes
- 8PawlettSubstituted forAppereat 3'minutes
- 10ClarkBooked at 87minsSubstituted forWatsonat 90+1'minutes
- 24ShanklandBooked at 90mins
- 3PenriceBooked at 31mins
- 7CardleSubstituted forHarkinsat 80'minutes
- 9MillerSubstituted forMansellat 68'minutes
- 23De Vita
- Greg Aitken
- Shots on Target
Second Half ends, Dundee United 1, Partick Thistle 0.
Corner, Partick Thistle. Conceded by Paul Watson.
Lawrence Shankland (Dundee United) is shown the yellow card.
Hand ball by Lawrence Shankland (Dundee United).
Substitution, Dundee United. Paul Watson replaces Nicky Clark.
Attempt saved. Shea Gordon (Partick Thistle) right footed shot from outside the box is saved in the centre of the goal.
Attempt blocked. Lawrence Shankland (Dundee United) right footed shot from the centre of the box is blocked.
Nicky Clark (Dundee United) is shown the yellow card.
Foul by Ian Harkes (Dundee United).
Lewis Mansell (Partick Thistle) wins a free kick in the defensive half.
Attempt missed. Louis Appere (Dundee United) right footed shot from outside the box is close, but misses to the left.
Corner, Dundee United. Conceded by Gary Harkins.
Lawrence Shankland (Dundee United) wins a free kick in the defensive half.
Foul by Steven Saunders (Partick Thistle).
Substitution, Partick Thistle. Gary Harkins replaces Joe Cardle.
Attempt missed. Joe Cardle (Partick Thistle) right footed shot from the centre of the box is just a bit too high.
Attempt blocked. Dario Zanatta (Partick Thistle) right footed shot from the left side of the box is blocked.
Nicky Clark (Dundee United) wins a free kick in the attacking half.
Foul by Stuart Bannigan (Partick Thistle).