It had looked like a tight, three-horse race for third spot would go down to the wire - until losing streaks for Dundee United (four) and Aberdeen (three) handed the prize to Hibernian.Now the Dons, who have suffered successive heavy defeats by Rangers and Celtic, travel to Tannadice still three points clear of their hosts as they go head to head for fourth.United, who beat Aberdeen 1-0 on their last visit in December before a 2-2 draw at Pittodrie, must win to overtake their east-coast rivals o