Keegan Bradley held off a final-round charge from Charl Schwartzel to win the PGA Grand Slam on Wednesday.
Bradley's par-71 left him 4 under for the tournament and a shot ahead of Schwartzel, who finished with a course-record tying 65 to improve from 3 over to 3 under.
Overnight leader Rory McIlroy struggled with tee shots at Nos. 7 and 15, which led to bogeys. He finished with a 75 for the round.
Darren Clarke shot a 74 to finish 9 over in the two-day event in Bermuda.