Overnight leader Matt Kuchar held off a late challenge from fellow American Kevin Chappell to clinch the Memorial Tournament by two shots on Sunday.
Leading by two going into the final round at Muirfield Village Golf Club, the 34-year-old Kuchar was never caught as he fired a four-under-par 68 in the PGA Tour event hosted by Jack Nicklaus.
Kuchar birdied all four of the par-fives on the heavily tree-lined layout to remain in control and rubber-stamped his win by sinking a 20-foot birdie putt at the par-four last for a 12-under total of 276.
Chappell, seeking his first PGA Tour victory, birdied four of the last six holes for a bogey-free 68 and outright second place while five-times champion Tiger Woods ended a forgettable week with a 72, finishing a distant 20 strokes off the pace.
Rory McIlroy finished off with a round of 72 to lie on six over.