 Here's what you need to know. Things getting very interesting at Royal Troon for the third round of the Open. We've got a crowded leaderboard, a three-way tie for first with Billy Horschel, Shane Lowry, and qualifier Daniel Brown all sitting at six under. Xander Schauffele and Justin Rose tied for fourth, sitting two shots back. Scotty Scheffler and Sam Burns are in the mix as well, both at minus three. Three shots off the pace. The leaders currently making the turn onto the back nine.