Scotland bench will be key in Welsh struggle, says coach

Rugby Union - Italy v Scotland - RBS Six Nations Championship 2016 - Olympic Stadium, Rome, Italy - 27/2/16. Scotland's coach Vern Cotter attends during a Six Nations tournament match. REUTERS/Alessandro Bianchi

EDINBURGH (Reuters) - Players coming off the bench and delivering powerful performances will be vital for Scotland if they are to beat Wales for the first time in a decade in the Six Nations on Saturday, said coach Vern Cotter.

Scotland host the match at Murrayfield where they have already beaten Ireland in the Six Nations this season but Cotter is aware of the strength of the Wales squad.