Golf was featured in the Summer Olympic Games official program in 1900.
Golf was featured in the Summer Olympic Games official program in 1904.
In 1930, professional golfer Bobby Jones praised Joyce Wethered after they played an exhibition against each other, stating his belief that she was one of the best golfers, regardless of gender.
The Masters Tournament was founded in 1934 and has been played at Augusta National Golf Club in Augusta, Georgia since its inception.
The Senior PGA Championship was founded in 1937.
In 1947, Babe Zaharias became the first American to win the British Women's Amateur title. However, in the same year, her application to qualify for the U.S. Open was rejected by the USGA, stating that the event was intended for men only.
The Ladies Professional Golf Association (LPGA) was formed in 1950 to increase the popularity of women's golf and provide more competitive opportunities for female golfers.
In 1960, Jack Nicklaus finished second in the U.S. Open to champion Arnold Palmer, with a 72-hole score of 282, which was the best score to date in that tournament by an amateur.
In 1961, Jack Nicklaus won that year's U.S. Amateur Championship.
In 1962, Jack Nicklaus turned professional.
In February 1971, astronaut Alan Shepard became the first person to golf anywhere other than on Earth. He smuggled a golf club head and two golf balls on board Apollo 14 and hit two golf balls on the moon.
In 1972, the U.S. Congress passed Title IX of the Education Amendments, prohibiting sex-based discrimination in any educational program or activity receiving federal financial assistance. This legislation had a significant impact on women's sports, including golf.
American golfer Renee Powell, who had moved to the UK to advance her career, became the first woman to play in a British men's tournament in 1977.
In 1984, the first golf course opened in China.
In 1996, the International Federation of PGA Tours was founded as a trade body for the world's main golf tours.
The Asian Tour became a full member of the International Federation of PGA Tours in 1999.
In 2000, according to the National Golf Foundation, 6.9 million people in the United States played golf at least 25 times per year. The NGF also reported that 30 million people played golf at all.
In 2000, the Canadian Tour became an associate member of the International Federation of PGA Tours.
The Women's British Open replaced the du Maurier Classic as a major in the LPGA Tour in 2001.
The Senior Open Championship was not recognized as a major by PGA Tour Champions until 2003.
From 2004 to 2009 the number of golf courses in China tripled despite an official ban, as the ban was evaded with the government's tacit approval.
In 2004, The R&A was spun off from The Royal and Ancient Golf Club of St Andrews.
In 2005, Golf Digest calculated the countries with the most golf courses per capita.
In 2005, according to the National Golf Foundation, the number of people in the United States who played golf twenty-five times or more per year decreased to 4.6 million from 6.9 million in 2000. The NGF reported that the total number who played golf decreased from 30 million to 26 million over the same period.
The Tour de las Américas, representing Latin America, became an associate member of the International Federation of PGA Tours in 2007.
In 2008, the Ladies European Tour (LET) scheduled an event that conflicted with the LPGA Championship, marking a change from its previous practice of avoiding conflicts with LPGA majors.
By the end of 2009, there were roughly 600 golf courses in China despite an official ban on new golf course development for much of the 21st century, except for Hainan province.
The International Federation of PGA Tours underwent a major expansion in 2009, with eleven new tours becoming full members.
Since 2010, both the PGA Tour and European Tour's money titles have been claimed by the same individual three times.
In 2011 in the United States, women made up 19 percent of golfers.
In 2011, Luke Donald claimed both the PGA Tour and European Tour's money titles.
In 2011, the PGA Tour effectively took over the Tour de las Américas.
In 2012, Rory McIlroy claimed both the PGA Tour and European Tour's money titles.
In 2013, Henrik Stenson won the FedEx Cup points race on the PGA Tour and the European Tour money title but did not top the PGA Tour money list. Tiger Woods won the PGA Tour money list in 2013.
The Evian Championship was added as the fifth major in the LPGA Tour in 2013.
In 2014, Rory McIlroy claimed both the PGA Tour and European Tour's money titles.
After a 112-year absence, golf returned to the Summer Olympic Games in 2016 in Rio de Janeiro.
Despite progress in women's golf, a significant pay gap persisted in 2016, with the USGA awarding substantially more prize money to winners of the men's U.S. Open compared to the U.S. Women's Open.
In 2016, anchored putting, a style that involves anchoring the putter to the player's stomach or chin for stability, was banned on professional golf circuits.
In 2017, the USGA and R&A undertook a complete rewrite of the rules of golf with the aim of simplifying them.
In January 2019, a new rule book jointly written by The R&A and the United States Golf Association (USGA) came into effect, aiming to simplify the rules of golf.
In 2019, a list of countries with the most golf courses was created.
In 2020, a new World Handicap System was introduced globally, developed by the USGA, The R&A, and various handicapping authorities to address difficulties in translating between different handicap systems.
In 2021 in the United States, women made up 25 percent of golfers, up from 19 percent since 2011. In 2021, junior female golfers accounted for 35 percent or 1.1 million golfers.