(1975- ) a US golfer who, in 1997, became the youngest person ever to win the US Masters Tournament. In 2000 he won the US Open and The Open (in Britain). This made him the youngest player to have won all four Majors (=the two Opens, the US Masters, and the PGA). In 2001 he won the US Masters to complete a grand slam of holding all four major titles at the same time.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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