The Grand Slam in golf refers to winning all four of the sport's major championships in the same calendar year. The modern professional Grand Slam consists of winning the following tournaments in one year:
- Masters Tournament (held in April at Augusta National Golf Club)
- PGA Championship (held in May at various U.S. locations)
- U.S. Open (held in June at various U.S. locations)
- The Open Championship (also known as the British Open, held in July in the UK)
Winning all four in a single year is extremely rare and has never been accomplished in the modern era. The only true calendar-year Grand Slam was achieved by Bobby Jones in 1930, but his majors included the U.S. and British Opens plus the U.S. and British Amateur championships, as the Masters and PGA Championship did not yet have their current status
. There is also a "Career Grand Slam," which means winning each of the four majors at least once over the course of a player's career. Only six male golfers have accomplished this: Gene Sarazen, Ben Hogan, Gary Player, Jack Nicklaus, Tiger Woods, and Rory McIlroy
. Tiger Woods uniquely held all four major titles simultaneously across two calendar years (2000–2001), a feat called the "Tiger Slam"
. In summary:
- Calendar-year Grand Slam: Winning the Masters, PGA Championship, U.S. Open, and The Open Championship all in the same year (never done in modern era).
- Career Grand Slam: Winning each of these four majors at least once during a career (achieved by six golfers).
Bobby Jones's 1930 Grand Slam included the top amateur and open championships of his time, before the modern majors were established
