Reigning RBS 6 Nations champions Wales kick-started their campaign with a comfortable victory over 14-man Scotland at the Millennium Stadium.
The Scots, cock-a-hoop after beating tournament favourites France last weekend, crashed back to earth after lock Scott Murray was sent off for kicking Wales forward Ian Gough in the head.
Murray, the first Scottish player to be red-carded in a Test match since 2002, departed after just 22 minutes, with New Zealand referee Steve Walsh also sin-binning Gough for a late tackle on Murray.
Scotland, who had conceded a sixth-minute penalty try when Wales exerted scrum dominance, battled bravely to stay in touch.
But Wales' one-man advantage inevitably told, and skipper Gareth Thomas claimed a try double, taking his Test tally to 36, while lock Robert Sidoli also touched down, with fly-half Stephen Jones slotting four conversions.
It was a satisfactory Welsh response to their 47-13 drubbing against England at Twickenham last Saturday.
Although Scotland managed late consolation tries from full-back Hugo Southwell and wing Chris Paterson, who also kicked two penalties and a conversion, main line-out operator Murray's departure left a huge void.
Wales attempted to produce their renowned wide game, and with scrum-half Dwayne Peel the architect of those confident attacking efforts, Scotland were ultimately run to a standstill.
Scotland's defeat means England - who visit Murrayfield when the tournament resumes on February 25 - are RBS 6 Nations leaders by two points, and now the only team who could clinch a Grand Slam this season.
Wales, meanwhile, will travel in confident mood to Dublin, where Ireland await in a fortnight.
Conor O'Shea will lead his side to matches against Fiji and Australia
30 March 2017, 2:36pm
After a disappointing RBS 6 Nations campaign for the Azzurri - losing all five of their Championship matches and picking up their 12th Wooden Spoon - they will be licking their wounds ahead of their summer tour Down Under.
The 2017 RBS 6 Nations was watched by record numbers of fans
29 March 2017, 12:25pm
After an enthralling RBS 6 Nations Championship of twists, turns, and no small amount of drama on the last day, figures show the RBS 6 Nations is going from strength to strength, year on year, with no sign of slowing down.