DUBLIN, Ohio: Scottie Scheffler was at his best on a tough day at Muirfield Village, opening with 13 straight pars and then pouring it on at the end for a 4-under 68 that gave him a one-shot lead Saturday over Ben Griffin at the Memorial. Scheffler birdied four of his last five holes, finishing with a birdie from just inside 15 feet. He took the lead when Griffin missed a 3-foot par putt on the final hole. At stake for Scheffler is a chance to win for the third time in his last four tournaments and join Tiger Woods as the only back-to-back winners at the Memorial. “I don’t know what the scoring average was today, but I was definitely proud of the way I finished and it was really challenging,” Scheffler said. “Through 13 holes, I felt like I was playing really good and I was only even par.