 Billy Horschel is the leader of the Open through three rounds. He shot a 69 today in Scotland and sits four shots under par. Six golfers are tied for second at three under. World No. 1 Scotty Scheffler is alone in eighth place and has two shots off the lead at two under par. The final round will get underway about 2.30 a.m. Eastern. Horschel has never won a major on the PGA Tour.