The Modern (or Professional) Grand Slam describes winning the four professional Major Championships — the PGA Championship, the Masters and the United States and British Opens — in a calendar year. The Career Grand Slam describes winning each of these events once in a career. Only Gene Sarazen, Ben Hogan, Gary Player, Jack Nicklaus and Tiger Woods have accomplished this. No one has ever won the Modern Grand Slam. In 1930, Bobby Jones won the U.S and British Amateurs and Opens, a feat which was termed the Grand Slam and has never been duplicated. The 28-year old Jones retired from competitive golf that year. In addition, The PGA of America’s Grand Slam of Golf is a late-season event that features the winners of that year’s four Professional Major championships.