Rob Maclean presents highlights from the perennially entertaining fourth round of the Scottish Cup. The match action includes a repeat of 2010's final being played out at Tannadice as Ross County face Dundee United, while Hibernian take on Ayr United in Edinburgh and Falkirk meet Partick Thistle. The comprehensive coverage also includes highlights of the day's nine other ties. Commentary by Liam McLeod, Alasdair Lamont and Paul Mitchell with analysis from Pat Nevin.