Ireland lived up to their billing as pre-tournament favourites with an emphatic 34-10 bonus-point victory over Wales at the Principality Stadium in the opening game of the 2023 Six Nations.
The visitors, looking to go one better than last year when finishing second to France, led by 24 points at half-time and saw the job through despite dropping off for much of the second period.
Caelan Doris, James Ryan, James Lowe and Josh van der Flier all helped themselves to tries for Ireland, who will face a far sterner test when they host reigning champions France next weekend.
Returning head coach Warren Gatland saw Wales' numerous issues up close in his first game back in charge, with the Dragons now on a four-game losing run in the competition.
Conor Murray's quick pass allowed Doris to cross over inside two minutes and Ireland had a second try soon after when a short tap penalty culminated in Ryan muscling over.
Johnny Sexton's successful conversions had Ireland 14 points up, but Wales elected to take on a penalty – slotted home by Dan Biggar – instead of pushing for a first try.
Fly-half Sexton wasted no time in restoring Ireland's cushion from the boot, and Ireland were out of sight when Lowe anticipated Biggar's pass and charged 60 metres to score.
Having already kicked over the conversion, Sexton added three more points from another penalty, but Wales did at least show some sort of response early in the second half.
Liam Williams found a gap and dived under the posts soon after the restart, which Biggar converted to see the hosts enjoy a prolonged spell on top for the first time.
But Ireland, who were forced into a late line-up change when Jamison Gibson-Park was replaced by Murray, cruised to victory after Williams was sin-binned for a challenge on Sexton.
Andy Farrell's side put that man advantage to good use as, after wave after wave of attacks, Van der Flier dotted down between the posts to get the bonus points on the board.
Rare Irish win in Cardiff after lightning start
Doris' try with 119 seconds played was the third-quickest in a Six Nations match and set the tone for Ireland, whose 27-point half-time total was their highest ever in this fixture.
Ireland opted for defence over attack in the second half as they became the first away side to prevail in this fixture in 10 attempts, since they last did so in Cardiff in 2013.
Wales woes continue despite return of Warren
Gatland's return to the hot seat did not quite have the instant impact Wales fans would have hoped, with the Dragons having now lost four Six Nations games in a row.
Wales had previously won seven on the spin in the competition under Gatland, who returned to the role to replace Wayne Pivac in December, but already their title hopes are looking slim.
What's next?
Ireland have a huge showdown with France in Dublin next Saturday, with that potentially a showdown for the title. Wales travel to Scotland for their next outing in a week's time.