 Sports at 25 and 55 brought to you by Amentum. Solving what's next. Engineering a safer, smarter, cleaner world. Here's Steve Dresner. Third round action from the 152nd Open at Royal Troon in Scotland. A crowded leaderboard. We have Billy Horschel and Daniel Brown tied at five under. Atop the leaderboard, Xander Schauffling and Justin Rose just had one shot behind.