Wales 1 Scotland 3:Scotland came from a goal down to beat Wales at the Aviva Stadium and set up a Carling Nations Cup decider with Ireland on Sunday.
In a 15 minute second half spell, goals from James Morrison, captain Kenny Miller and Christophe Berra ended any hope of an unlikely Wales win.
Rob Earnshaw scored the opener in the 36th minute after chasing down a hopeful punt and capitalising on a weak defensive header before scampering clear and lifting the ball over Allen McGregor.
After last night's 5-0 win over Northern Ireland the host nation will win the inaugural competition if they win or draw with Scotland on Sunday.