Short answer: No one has ever won all four major championships in a single calendar year in the modern era. The feat is known as the Grand Slam, and it has only been achieved in history by Bobby Jones in 1930, when The Masters did not exist yet, followed by limited near-misses in later years by players like Tiger Woods and Ben Hogan.
Details and context
The only player to complete a true calendar-year Grand Slam in golf history is Bobby Jones in 1930. This occurred before The Masters Tournament was established, and Jones did it as an amateur across the Open Championship, U.S. Open, The Open Championship (British Open), and the now defunct Amateur Championship context for his era.[5][6]
In the modern era (post-1934 Masters introduction), several greats have come very close by winning three of the four majors in a single year, but none have captured all four in one season. Notable near-misses include Tiger Woods (three majors in several years and the famous “Tiger Slam” spanning 2000–2001 when he held all four majors at once, but not within a single calendar year) and Ben Hogan (three majors in 1953).[10][5]
The consensus among golf historians and major-championship trackers remains: a true calendar-year Grand Slam in the modern era has not occurred. Some sources note Joe Jones’s pre-Masters Grand Slam as the lone historical instance, while modern discussions emphasize the rarity and near-misses by later champions.[3][5]
If you’d like, I can pull the latest authoritative summaries or timelines from recent golf reference sites and compile a concise table showing all players who won multiple majors in a single year and where they fell short of the Grand Slam.
The only golfer to win a calendar-year grand slam was Bobby Jones in 1930. That's before The Masters existed, and as an amateur golfer Jones did not play the PGA Championship. Woods is the only player to have won all four professional major championships in a row, accomplishing the feat in the 2000–2001 seasons. This feat became known as the "Tiger Slam". Woods set the all-time PGA Tour record for most consecutive cuts made, with 142.
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