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GULLANE, Scotland — Phil Mickelson is mystified no more by links golf. He has his name etched in a silver claret jug to prove it.
Mickelson delivered his best closing round in a major Sunday — at the British Open, of all places — when he ran off four birdies over the last six holes for a 5-under-par 66 at Muirfield to win the third leg of the career Grand Slam.
‘‘I just never knew if I'd be able to develop the game to play links golf effectively,’’ Mickelson said. ‘‘To play the best round arguably of my career, to putt better than I've ever putted . . . it feels amazing to win the claret jug.’’
Mickelson wound up with a three-shot win over Henrik Stenson.