The Ospreys made the Scarlets wish they had stayed at home with a crushing 50-24 Boxing Day victory at Liberty Stadium.
The Scarlets were brought crashing down to earth after their Heineken Cup success in Toulouse as they were blitzed with a five try display by the Ospreys.
After the drama of their 41-34 win at Toulouse in the Heineken Cup ten days ago, the Scarlets were put to the sword in the Magners League clash as the Ospreys bounced back from their 30-24 defeat at Cardiff Blues just four days before.
The Scarlets lost chief playmaker Stephen Jones with back spasms in the warm-up, but the hosts were powerless against a rampaging Ospreys side with rising star James Hook in sublime form and claiming a personal twenty-three point haul in the No.10 shirt in front of a bumper 20,500 crowd.
The hosts raced out to a 13-0 lead when fullback Lee Byrne broke the defence to leave No.8 Ryan Jones to crash over. Hook landed the conversion and kicked two penalties before the Scarlets finally sprang into life.
Their fly half, Thomas, chipped the defence and with a posse of midfielders chasing the ball into the dead ball area, Ospreys scrum half Justin Marshall slapped the ball away, leaving referee Nigel Owens no option but to award a penalty try and show the ex-All Black a yellow card.
Thomas landed the conversion but Hook was in sublime kicking form with three more penalties before Thomas put the Scarlets back into contention with a penalty deep in first half injury time to make it 22-10 at half-time.
The game was effectively ended as a contest just after the break when Marshall's interception fed wing Nikki Walker who sprinted clear for his side's second converted try.
The Scarlets replied with Dwayne Peel darting over for a converted try to pull the scores back to 29-17, but Lee Byrne carved a huge hole in the crumbling defence for his side's third try and Hook's third conversion.
Second half replacement lock Lyndon Bateman barged his way over for his side's fourth try late on which gifted the Opsreys the bonus point. The fifty point mark was broken when substitute flanker Andy Lloyd crashed over under the posts in injury time and Hook's replacement Shaun Connor landed the conversion.
Gavin Evans converted try on the final whistle just about spared the Scarlets' blushes.
Wales Head Coach Rob Howley talks to WRU TV's Sebastian Barrett about the 36-man squad he has just named for the forthcoming Under Armour series, which includes two uncapped players, Ospreys duo Sam Davies and Rory Thornton.
Head coach Rowland Phillips is deligthed he can now call BT Sport Cardiff Arms Park home for his Wales Women's side, who launch their international season next month with games against Scotland and UK Armed Forces in the heart of the capital city.
Wales Sevens star Sam Cross has put his home town club of Brynmawr on the map after winning a silver medal at the Rio Olympics with Team GB. His club have now honoured him by naming their players bar after him, as WRU TV discovered at the official launch, recently.
One of the newest members of the Principality Premiership, Bargoed admit it's proving to be a steep learning curve at the highest level, but are determined to become a force to be reckoned with. WRU TV visited the club last weekend when they took on Llanelli.
Table-topping Aberavon travel to north Wales to tackle RGC 1404 as both teams defend unbeaten starts to the season in the Principality Premiership. WRU TV's Graeme Gillespie visited the Wizards to see how their preparations were going for the game of the weekend.
The Half a Game initiative is currently sweeping across Wales and proving a major success. The scheme aims to give every young player at least half a game every weekend. WRU TV recently visited a festival in Narberth where clubs have fully embraced the initiative.
Both Bargoed and Swansea were seeking their first win of the Principality Premiership season this afternoon. It proved a fruitful day for the hosts - not only did they win, but Bargoed claimed a try bonus point.
Cardiff managed to keep their unbeaten record at home intact, but only just as Bridgend made them work extremely hard before the Blue and Blacks secured a hard fought Principality Premiership win at the BT Sport Arms Park last night.
Former Wales back row Andy Powell gives a guided tour of The Wern, home of Merthyr RFC, who are determined to prove a lot of people wrong and make their mark in their first season in the Principality Premiership.
Wales Sevens head coach Gareth Williams looks back on the Rio Sevens success where he helped GB win silver. He believes the successful campaign is a huge boost to his Welsh squad as they prepare for another World Series, as WRU TV's Graeme Gillespie discovers