 In the final round of the 152nd British Open at Royal Troon, American Billy Horschel and Justin Rose are tied for the lead at four under par overall. The reason is, moments ago, Horschel just bogeyed the third hole. So he and Justin Rose are tied at four under par overall. Then, among those one shot back at three under par overall, Scotty Scheffler and Xander Shoffley.