The clubhouse of the Royal and Ancient Golf Club of St. Andrews sits just off the first tee. The course itself is open to the public — women as well as men. But women have never been allowed to join the club since its founding in 1754, and are not allowed to enter the clubhouse, even as guests. Doug Tribou/NPR hide caption

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Lydia Ko of New Zealand reacts as she birdies the final hole to win her second consecutive Canadian Women's Open Sunday. Because Ko is an amateur, she didn't receive the winner's check for $300,000. Stephen Dunn/Getty Images hide caption

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A man finds some shelter from the rain Thursday at the U.S. Open, which is being played at Merion Golf Club in Ardmore, Pa. Brendan Smialowski /AFP/Getty Images hide caption

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Adam Scott (left) of Australia celebrates after winning a playoff against Angel Cabrera (right) of Argentina at the Masters golf tournament in Augusta, Ga. In between them is Steve Williams, Scott's caddie. Kyodo /Landov hide caption

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Tiger Woods drops his ball after hitting into the water on the 15th hole during the second round of the Masters Tournament at Augusta National Golf Club. He was later assessed a two-stroke penalty for the improper drop. Mike Ehrmann/Getty Images hide caption

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