Leinster clash 'massive' - Jackson

Ulster fly-half Paddy Jackson is targeting victory over leaders Leinster on Saturday to boost hopes of making the Pro12 play-off semi-finals.

Ulster sit fourth with two matches left and director of rugby Les Kiss, captain Rory Best and forward Iain Henderson also look ahead to the Kingspan Stadium encounter.

Ulster wing Tommy Bowe is ruled out of the Irish derby because of a knee injury while Nick Williams has played his last game for province - the number eight, who will join Cardiff next season, is set to have shoulder surgery.