Leinster fell to a 25-22 defeat away to the Dragons in the Guinness PRO12.
Leinster were in front at the break after tries from Ben Te’o and Jimmy Gopperth in the first half gave the province at 8-15 lead.
Leinster’s third try, and Te’o’s second, extended the lead, but a yellow card for the try-scorer gave Dragons a route back into the game.
The Welsh side took advantage and went in front, 25-22, with a try in the 72nd minute.
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