1924 Joyce Wethered wins her record fifth consecutive English Ladies' Championship. The Olympic Club in San Francisco opens for play. The USGA legalizes steel shafted golf clubs. The R & A does not follow suit until 1929, widening the breach in The Rules of Golf. 1925 The first fairway irrigation system is developed in Dallas, Texas. Deep-grooved irons are banned by both the USGA and the R & A. 1926 Men's golf in Great Britain and Ireland gets its first standardized handicapping system. Jess Sweetser becomes the first native-born American to win the British Amateur. Bobby Jones wins the British Open. Gate money is instituted at the British Open. Walter Hagen defeats Bobby Jones 12 and 11 in a privately sponsored 72-hole match in Florida. The Los Angeles Open is inaugurated, the third-oldest surviving PGA Tour event. It is also the first tournament to offer a $10,000 purse. 1927 The inaugural Ryder Cup Matches are played between Britain and the United States. Creeping bentgrass is developed for putting greens by the U.S. Department of Agriculture. 1928 Cypress Point Club opens, designed by Alister MacKenzie. 1929 Walter Hagen wins The Open Championship for the fourth time. Seminole Golf Club opens in Palm Beach, Florida, from a design by Donald Ross. 1930–1940 1930 Bobby Jones completes the original Grand Slam, winning the U.S. and British Amateurs and the U.S. and British Opens in the same year. Since Jones is an amateur, however, the financial windfall belongs to professional Bobby Cruickshank, who bets on Jones to complete the Slam, at 120-1 odds, and pockets $60,000. Jones, perhaps satisfied that he has achieved all he can in the game, retires from competition aged 28 to practice law full-time (and to found a new club that would become known as Augusta National). The Minehead Club makes Captaincy elective. They had been the last club to award the Captaincy to the winner of the annual competition. The Duke of York (later King George VI) is elected Captain of the R & A. Shinnecock Hills Golf Club opens its modern course on Long Island, New York. Bob Harlow is hired as manager of the PGA's Tournament Bureau, and he first proposes the idea of expanding "The Circuit," as the Tour is then known, from a series of winter events leading up to the season ending North and South Open in spring, into a year-round Tour. In 1926