Plot: Highlights from the fifth round of the William Hill Scottish Cup as Dundee United travel to Ibrox to face Rangers, with the Tangerines looking for a repeat of their victory over the the Gers in their successful cup run two seasons ago. Hearts face St Johnstone at Tynecastle, hoping for the win that will see them reach the quarter-finals for the first time in six years, but will be wary that it was the Saints that knocked them out of the competition last season