Austria's David Gleirscher pulled off a surprise victory in the men's singles luge Sunday at the Pyeongchang Winter Olympics after hot favorite Felix Loch of Germany sensationally bombed out on the final run.Chasing a third straight gold medal in the event, Loch came into the fourth and final run with a 0.192-second advantage over Chris Mazdzer of the United States, who led Gleirscher by 0.020.(Getty)After a shaky start on his final run, the Vancouver and Sochi Olympic gold medalist made contact with the wall and lost all momentum, tumbling to a fifth-place overall finish.Gleirscher, 23, st…READ FULL ARTICLE