 Westwood One Sports presents this special report on the 152nd British Open Championship, sponsored by Prevagen. Billy Horschel at four under as Championship Sunday begins at Royal Troon. Six players nodded at three under par. And then there's Scotty Scheffler. The world number one is solo eighth, two shots off the lead, looking for his second major of the year. Even par 71 yesterday, he said birdies were hard to find.