Ross County 1-3 Partick Thistle
Partick Thistle notched up their first win since returning to the top flight with a comprehensive victory against Ross County.
Thistle's Kris Doolan found the net after Conrad Balatoni's header had been saved.
Steven Lawless fired in a second-half double in a seven-minute period to extend the Jags' lead further.
A Graham Carey strike pulled one back for the hosts, but it was scant consolation for Derek Adams' men.
The result means County are without a point after two Scottish Premiership matches while Thistle continue their unbeaten start to the campaign following the opening-day 0-0 draw with Dundee United.
County made just one change for the game in Dingwall, with Orhan Mustafi replacing Kevin Luckassen in the starting line-up, while Partick Thistle were unchanged from the side which held Dundee United to a goalless draw at Firhill last Friday night.
The breakthrough came when Balatoni's header from a corner was saved and Doolan knocked in at the back post to give the Jags their first league goal of the season.
County's Rocco Quinn sent in a shot that edged wide of Scott Fox's left-hand upright as the hosts pushed for a leveller.
A shot by Lawless drifted over the County crossbar with 10 minutes remaining of the first half at Dingwall.
Sean Welsh headed across the face of the County goal from an Aaron Muirhead corner, almost giving the Jags their second of the match immediately after the restart.
Kris Doolan almost made it two for Partick Thistle when he rolled the ball towards the County goal, but keeper Mark Brown made the block.
But with 53 minutes expired, Lawless doubled the Jags' lead when he pounced on a poor Grant Munro clearance to fire home.
The visitors further extended their lead when Stuart Bannigan beat the offside trap and cut the ball along the six yard line for Lawless to net his second of the day.
Carey drove home a left-footed effort after good work by Mihael Kovacevic.
Five minutes later, Carey could have doubled his tally when he fired in a shot from a free-kick, but Fox managed to contain it.
With only injury time remaining, new signing Kallum Higginbotham had the ball in the back of the net for Thistle, but referee Alan Muir sided with his assistant and ruled it out for offside.