Ulster started life after Dan McFarland with an impressive 49-26 victory over the Dragons in the United Rugby Championship (URC) at Kingspan Stadium on Saturday.
Tries from Will Addison, Michael Rowley (twice), Harry Sheridan (twice), Nick Timane and David McCann sealed a thrilling victory and left them fourth in the league standings.
The Dragons earned at least a try bonus point from the URC defeat with crosses from James Benjamin, Matthew Screech and Brodie Coghlan and a penalty try.
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The hosts took the lead after just four minutes, with Billy Burns putting Addison ahead before John Cooney converted well.
The Dragons equalized 11 minutes later when Benjamin was driven over from a driving maul and Will Reid converted.
But Ulster were back in front six minutes later when Lowry ran in unopposed to score his second try after Addison and McCann linked up on the flanks from a turnover.
Thirty minutes after Sheridan converted from close range, Cooney converted his third to give Irish Province a 21-7 lead.
The bonus point try came 32 minutes later when Lowry scored his second goal of the game, and again from Cooney to end the first half and Ulster looked to have taken the lead for good with a 28-7 lead.
The visitors hit back with their first goal of the second half in the 51st minute when Lock Screech fired home from close range, but Reid's conversion hit the post and went wide.
Ulster hit back five minutes later with their fifth try of the night, with McCann touching down and Cooney scoring a superb touchline conversion.
The Dragons again refused to give in and turned things around again for the third try when Coghlan drove in, this time with Reid converting.
Ulster were back on the scoresheet with nine minutes left, Timoney scoring from a corner, Cooney scoring again in the extras and McCann running in to score his second touchdown with five minutes remaining.
The match ended with a penalty try and a try bonus for the Dragons, with Timane also given a yellow card.
Leinster gathering to see off Cardiff
Elsewhere in the final stages of the game, Leinster recovered from a 15-12 half-time deficit to claim a 33-20 bonus point victory over a determined Cardiff side at the Arms Park.
Leinster had not lost against Wales since Cardiff beat them more than two years ago, but they fell behind just after half-time, conceding 15 goals.
But in the end, tries were scored by a double between winger Rob Russell, number eight Max Deegan, hooker John Mackie and stand-in prop Michael Milne, with flyhalf Ross Byrne scoring four conversions. In the end, they overpowered the host nation and achieved their ninth win of the URC campaign.
Cardiff pushed hard, spurred on by Wales prop Lys Carre's two tries and Aled Summerhill's touchdown, but their only remaining points came from Tinus de Beer's conversion and a penalty.
Leinster came out of the blocks and rocked Cardiff with two tries in the first 10 minutes.
Prop Tom Clarkson was the key man in the opener, breaking through to play a scoring pass to Russell, Deegan crashing in from close range and Byrne converting to make it 12-0.
Cardiff fell back but produced some promising runs of play, with Summerhill and Owen Lane providing attacking threats on either side of De Beer's penalty.
Cardiff continued to push forward and were rewarded four minutes before half-time with a perfectly executed lineout from the training ground.
Carre benefited, with scrum-half Ellis Bevan getting into space from an accurate set-piece possession and finishing strongly, converting De Vere to reduce Cardiff's lead to two points, before Carre struck again just before half-time. I scored a goal.
After flanker Thomas Young almost broke Leinster's cover, full-back Jordan Larmour was given a yellow card for a technical breach and Carré beat two Leinster defenders to score his second try. Their strength came to the fore once again, securing a 15-12 interval advantage.
Leinster thought they had regained the lead when Clarkson put in a cross from close range, but he was thwarted by Young across the goal line.
However, Cardiff could only hold on for five more minutes, and persistent pressure from Leinster's forwards ended with a touchdown for Milne and a conversion for Byrne.
Milne's second try with an hour to go, which was again converted by Byrne, gave both teams some light, but Cardiff found Summerhill's equalizer six minutes after Mackie's over.
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