15:25Rugby UnionLeinster Rugby v ScarletsBBC Radio 5 Sports Extra Duration: 2 hours, 5 minutes Sat 21st Apr 2018, 15:25 on BBC Radio 5 Sports ExtraLive commentary from BBC Radio Wales of Leinster Rugby v Scarlets in the European Rugby Champions Cup semi-final.GenresSportRugby UnionSeriesRugby Union Source: BBC Online