A Grand Slam in golf refers to winning all four of the sport's major championships. In men's professional golf, these four majors are:
- The Masters Tournament
- The PGA Championship
- The U.S. Open
- The Open Championship (British Open)
There are two main types of Grand Slam:
- Calendar-Year Grand Slam : Winning all four majors in a single calendar year. This feat has never been achieved in the modern era. The only player to win the equivalent of a Grand Slam in one year was Bobby Jones in 1930, but at that time the majors included the U.S. and British Opens and the U.S. and British Amateurs, as the Masters and PGA Championship did not yet have their current status
- Career Grand Slam : Winning each of the four majors at least once over the course of a player's career. This is more common but still very rare. Only six male golfers have completed the career Grand Slam in the modern era: Gene Sarazen, Ben Hogan, Gary Player, Jack Nicklaus, Tiger Woods, and Rory McIlroy (who completed his in 2025)
Additional terms related to the Grand Slam include:
- Tiger Slam : When a player wins four consecutive majors but not all in the same calendar year, as Tiger Woods did by winning the last three majors of 2000 and the Masters in 2001
- Little Slam : Winning both the U.S. Amateur and British Amateur championships in the same year, a term originating from Lawson Little's 1934 achievement
On the women's side, the majors differ slightly, with five recognized major tournaments including the Chevron Championship, U.S. Women's Open, LPGA Championship, Women's British Open, and Evian Championship. Grand Slams on the women's side have occurred but under different conditions historically
. In summary, a Grand Slam in golf is the achievement of winning the four most prestigious major tournaments, either all in one year (calendar Grand Slam) or over a career (career Grand Slam)
