15:10Rugby UnionCastres Olympique v Northampton SaintsBBC Radio 5 Sports Extra Duration: 2 hours, 5 minutes Sat 22nd Oct 2016, 15:10 on BBC Radio 5 Sports Extra5 live sports extra joins BBC local radio for live commentary from the European Rugby Champions Cup as Castres Olympique face Northampton Saints.GenresSportRugby UnionSeriesRugby Union Source: BBC Online