Rickie Fowler and Wyndham Clark head into the final round of the U.S. Open tied atop the leaderboard after the two Americans battled it out at the Los Angeles Country Club on Saturday. After an up-and-down front nine, Fowler settled into a groove on the back nine and would have had the outright lead if his par putt on 18 hadn't lipped out, leading to a frustrating bogey.