Despite guiding the Scarlets to victory, Mark Jones has warned critics not to write off Leinster just yet.
Mark Jones guided the Scarlets to a nail-biting opening win over Leinster but warned - don't write the European champions off.
Without Brian O'Driscoll and co, Girvan Dempsey's first-half strike and 11 points from the boot of last season's Euro hero Jonathan Sexton put the Irishman in the driving seat.
Scarlets skipper Jones saw Sean Lamont and Phil John reply with tries in either half to sink the reigning Heineken Cup champions.
But the Wales wing insists it is far too early to doubt the Magners League title hopes of Leinster and rivals Munster who lost to Glasgow.
Jones, 29, said: "I'm sure both Leinster and Munster will bounce back. Those teams have quality players and are missing their British Lions at the moment.
"I'm sure for their depth that it will be good for them to develop. You don't usually see a lot of their internationals this early in the season anyway because of the way the Irish provinces work.
"Of course, it's great to beat the European champions because we're hearing great things about their development policy and the players who will replace the O'Driscoll's and Gordon D'Arcy's are no mugs.
"But we showed tremendous character against a really good team with a great pedigree.
"It is early days but I'm sure it will be a scrap for the play-off spots this season and we know the Irish teams will be really strong come Christmas."
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.