Wales suffered a heartbreaking late loss at home as Scotland battled back to inflict a painful Six Nations defeat in a thrilling game in Cardiff.
Scotland trailed 20-5 but rallied in the second half with a 74th-minute try from replacement hooker George Turner sealing the victory.
It was the first time Scotland had led in the game after earlier tries from wing Kyle Steyn, replacement Darcy Graham and fly-half Finn Russell, who finished with 11 points.
Wales - who featured Dragons RFC duo Aaron Wainwright and Ben Carter - had scored tries from prop Rhys Carre and Josh Adams with 10 points from fly-half Sam Costelow.
Scotland will win a first Triple Crown since 1990 if they can beat Ireland in Dublin on March 14 while Steve Tandy's side will look to end a three-year Six Nations losing streak when they face Ireland on Friday, March 6.
