Robert Harley was a stand-out in the Glasgow pack

Both sides were chasing their first PRO14 win of the season after opening day defeats that could easily have gone the other way, but the opening stages were a scrappy affair.

Glasgow struggled to get out of their own half for much of the opening 10 minutes but gradually got on top.

Adam Hastings sliced a penalty well wide before getting the first three points on the board in the 28th minute.

The fly-half was just short from a similar long-range kick but Warriors kept the pressure on and grabbed the first try in the 33rd minute.

Oli Kebble had made some good metres earlier in the move as the home pack drove forward and the 28-year-old forced himself over the line.

Josh MacLeod limped off for Scarlets and Leigh Halfpenny, who had hit a club-record nine penalties in Scarlets' opening defeat by Munster, was wide with a simple kick before the break.

Sam Lousi was shown a red card for a high tackle which forced Ratu Tagive off with a head injury moments after the restart and there was another blow for Scarlets - and Scotland - when back-row forward Blade Thomson went off with what appeared to be an injury to his arm.

Glasgow made the most of their man advantage when Ryan Wilson went over after a tap-penalty in the 46th minute and Hastings soon kicked them 20 points ahead.

However, Scarlets refused to fold and Samson Lee dived over after a dummy near the line.

Steff Evans kept the visitors in the game when he dragged back Tommy Seymour after brilliant play from Hastings had sent his Scotland team-mate away down the left wing.

And the Welsh side suddenly had hope when Richie Gray was yellow-carded following some repeated infringements with 11 minutes left, to be quickly followed by Nick Grigg following a high tackle.

Warriors repelled the pressure though with some impressive defending, turning the ball over after a close-range tap penalty and defending a five-metre lineout maul.

Seymour and Nikola Matawalu then combined to stop Evans in the corner before a Hastings interception snuffed out the final Scarlets attack.