Leinster are back in title contention in the Guinness Pro12.
Tries from Ian Madigan and Jack Conan helped Matt O'Connor's side to a 24-11 defeat of Ulster at the RDS.
Ulster had initially secured an early lead, thanks to a Ruan Pienaar penalty. Ian Madigan put Leinster on the scoreboard with the first of his four penalties, while Piennar put Ulster ahead again briefly with his second successful kick in the 26th minute.
Two more Ian Madigan penalties put Leinster ahead 9-6 at half-time.
It was Madigan yet again with the first points of the second half, minutes after play recommenced - this time with a try, which he converted himself.
Wiehahn Herbst secured a try for Ulster ten minutes into the second half, but Piennar failed to convert.
Madigan's fourth successful penalty and a late try from Jack Conan put Leinster 13 points ahead of Ulster when the final whistle blew.
The win puts Leinster one point behind third-placed Munster and four points from the top, although Pro12 table-toppers Ospreys have a game in hand.
Worryingly for Leinster and Ireland Jamie Heaslip departed proceedings with a shoulder injury.
Ospreys travel to their Welsh rivals the Scarlets today, with that game getting underway at 5.05pm.
Elsewhere, an all-Italian meeting has finished Treviso 17 to Zebre's 15.
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