Nick Watney missed a chance for a 59 on Sunday in his CIMB Classic victory, closing with a course-record 10-under 61 at The Mines despite a bogey at the 18th.
Sean O'Hair was too happy to end a miserable slump with a win at the Canadian Open to feel bad that it came at the expense of Kris Blanks.
Webb Simpson made five birdies over his first 10 holes of the third round of the U.S. Open and he was still 10 shots behind Rory McIlroy.
"I felt like I was playing for my country out there," Hadwin said. "I'll catch a flight (Monday). I've got celebrating to do tonight."