Ben Hogan won the Masters, U.S. Open, and The Open Championship in the same year, accomplishing the feat in 1953.
Hogan opened the season by winning the Masters at Augusta National in April. He then captured the U.S. Open at Oakmont in June by six strokes before traveling to Scotland for The Open Championship at Carnoustie. He won there by four strokes, becoming the first golfer to win three professional major championships in one calendar year.
The achievement was especially remarkable because international travel was difficult and The Open’s schedule conflicted with the PGA Championship. Hogan had never played The Open before 1953 and made the transatlantic journey specifically to compete. His victory at Carnoustie became one of the defining accomplishments of his career.
Bobby Jones is a common mix-up because he won all four major championships recognized in his era during 1930, but he did not win the modern Masters, which began in 1934. Jack Nicklaus and Tiger Woods also won three majors in a season, but neither won these three specific championships in the same calendar year. Through the available historical record, Hogan remains the only golfer to complete this particular trio.