Wales got their Six Nations campaign back on track with a 28-18 win against a Scotland side reduced to 14 men after 22 minutes.
The defending champions opened their account in the fifth minute with a penalty try, after the Scottish scrum disintegrated.
A Chris Paterson penalty brought Scotland back into the game before a moment of madness from Scott Murray virtually gifted Wales the match. The Scottish lock was late tackled by fellow second-rower Ian Gough and lashed out with a kick to the head of his opponent. Referee Steve Walsh had no choice but to give Murray a red card with Gough spending 10 minutes in the sin bin.
Wales extended their lead when captain Gareth Thomas chipped over the Scottish defence and reclaimed possession to score his first Welsh Test try in two years. Jones knocked over the conversion, before a second penalty from Paterson made it 14-6 at half-time.
The home side grabbed their third try 15 minutes into the second half when scrumhalf Dwayne Peel threw a dummy before putting lock Robert Sidoli away for the five-pointer.
Five minutes later, Peel broke through two poor Scottish tackles and found Thomas on his outside, who scored his second of the afternoon. Jones added his fourth conversion to make it 28-6.
However, Scotland refused to capitulate and gave the scoreline some respectability when fullback Hugo Southwell went over in the right-hand corner, and Chris Paterson scored a 60m interception try.
Wales – Tries: Penalty try, Gareth Thomas (2), Robert Sidoli. Conversions: Stephen Jones (4).
Scotland – Tries: Hugo Southwell, Chris Paterson. Conversion: Paterson. Penalties: Paterson (2).
Yellow card: Ian Gough (22min)
Red card: Scott Murray (22min)