Rohl’s record preserved after being moments from another disasterBy the skin of his teeth, Rangers head coach Danny Rohl remains unbeaten in the Premiership.His unblemished record dangled over the precipice at Tannadice. Going into the final minute of stoppage time, Dundee United led 2-1 before Will Ferry’s late challenge on Max Aarons. The unlikely saviour of Nedim Bajrami rescued a point for the visitors from the penalty spot.It may prove crucial come the end of the season. Rangers remain fourth in the table and are nine points behind joint-leaders Hearts and Celtic. United stay eighth. Their manager Jim Goodwin will be cursing his luck, seconds away from victory.Will Ferry fouls Max Aarons for Rangers’ last-gasp penalty…