They beat Ospreys 26-7 in Wales yesterday.
There was a huge Offaly involvement in Leinster's latest PRO14 win.
Birr's 21 year-old prop Michael Milne made his first start at loosehead for the province.
He lasted 51 minutes racking up 12 carries for 17 metres and 6 tackles.
Meanwhile his fellow Birr man Peter Dooley, who replaced him in the second half, crossed for the province's final try in a 26-7 win.
Both men are vying to cement the back up role to Ireland prop Cian Healy and with the 100 times Irish international in the twilight of his playing years, the position is open in the long term as well.
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