Academy products Chris Cosgrave and Rob Russell both scored tries as Leinster maintained their unbeaten start to the URC season.
They registered a 35-5 bonus point win away to the Scarlets.
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Following his return from Wasps, John Ryan starts in the front row for Munster this evening in their meeting with Ulster.
James Hume makes a welcome return for the visitors.
Kick-off at Thomond Park is at 5.15.
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And Jarrad Butler makes his 100th appearance for Connacht in their game away to the Ospreys.
