Manchester United in Ukraine: how cold is too cold for sport? – video

Manchester United manager José Mourinho voiced his displeasure at Zorya Luhansk’s frozen pitch and the cold conditions which will take hold during the Europa League meeting in Ukraine on Thursday. So how cold is too cold for sport? To try and answer that question we look at some of the coldest sports events ever, from the NHL Winter Classic in Michigan to the thrillingly named Antarctic Ice Marathon