7–10 April: Masters Tournament - Tiger Woods defeated fellow American Chris DiMarco at the first playoff hole to claim his 4th Masters title, and his 9th major. He temporarily returned to No. 1 in the Official World Golf Rankings. DiMarco becomes only the second player (after Tom Watson) to lose playoffs in consecutive major championships.
16–19 June: U.S. Open - Michael Campbell came from behind in the fourth round to win his first major with an even par score. He was the first New Zealander to win a major since Bob Charles won the British Open in 1963. Retief Goosen led after three rounds, but fell away badly on Sunday and tied for eleventh. Tiger Woods had a good final round to claim second place, but talk of his winning a Grand Slam was ended for another year.
14–17 July: The Open Championship - Tiger Woods led wire-to-wire at the historic Old Course at St Andrews and won his second Open Championship, and 10th major, by 5 strokes. Scottish favorite Colin Montgomerie closed within a shot at one point on Sunday and finished on his own in second, his best ever result at The Open Championship. The Golden Bear, Jack Nicklaus, had a historic farewell as he retired from professional golf on Friday, July 15, after missing the cut. Woods became only the second golfer, after Jack Nicklaus, to win each major more than once.
11–15 August: PGA Championship - Phil Mickelson won his second major championship, taking the PGA at Baltusrol Golf Club by scoring a -4 276. Thomas Bjørn and Steve Elkington both tied for second with -3. The tournament had to be completed on Monday due to bad weather: this was the first time that a Monday finish occurred at the PGA since 1986.
Asian Tour - Thailand's Thaworn Wiratchant topped the order of merit with US$510,122, the first time a player had won over $500,000 in a season on the Asian Tour. Full list
22–25 September: Seve Trophy - After conceding an early lead Great Britain & Ireland pulled level before the singles, and then dominated the singles matches to win 16½ to 11½ and retain the Trophy.
22–25 September: Presidents Cup - The match was all square going into the singles, but the USA pulled away to win 18½ to 15½.
17–20 November: WGC-World Cup - Third round leaders Wales, represented by Stephen Dodd and Bradley Dredge, were declared the winners after the final round was called off due to bad weather.
20 March: Vijay Singh's tied second-place finish at the Bay Hill Invitational restored him to Number 1 after just two weeks.
10 April: Tiger Woods became World Number 1 again after winning The Masters.
13 May: Tiger Woods' record breaking run of 142 consecutive cuts made on the PGA Tour came to an end at the EDS Byron Nelson Championship.
22 May: Vijay Singh started his third spell as World Number 1, reclaiming the position from Woods even though neither man played that weekend.
13 June: Tiger Woods and Vijay Singh exchanged places at World Number 1 for the last time, with Woods opening a substantial gap in the rankings by early July.
2 July: Tiger Woods became the first man to pass $50 million in career earnings on the PGA Tour.
9–12 June: LPGA Championship - Annika Sörenstam cruised to a three shot win to claim her second major of the year and ninth of her career. Fifteen-year-old Michelle Wie was runner-up.
23–26 June: U.S. Women's Open - South KoreanBirdie Kim holes a 30-yard sand shot on the 72nd hole, punctuating her two-shot win over teenage amateurs Morgan Pressel and Brittany Lang. Kim, who scored her first and only LPGA tournament win, finished the event at 3-over-par 284. Sörenstam was never a factor, finishing nine shots back. Wie was in a three-way tie for the lead after three rounds, but ballooned to an 82 and finished tied with Sörenstam. Lorena Ochoa was at 3-over after 71 holes, but hit her tee shot into the water on the final hole and shot a quadruple-bogey 8.
28–31 July: Weetabix Women's British Open - Another South Korean who had no previous LPGA tournament wins, Jeong Jang, cruises to a four-stroke win over Sophie Gustafson. Wie finished in a tie for third in her last tournament of the year before returning to high school.
9–11 September: Solheim Cup - The USA overcame an early deficit to beat Europe 15.5-12.5 and reclaim the cup.
Other happenings
26 February: 15 year old Michelle Wie achieves her career best finish on the LPGA Tour, placing tied 2nd at the SBS Open at Turtle Bay.
22 May: 18 year old Paula Creamer became the youngest first time winner on the LPGA Tour since 1952 at the Sybase Classic presented by Lincoln Mercury.
5 October: Michelle Wie turned pro six days before her sixteenth birthday.
6 November: Annika Sörenstam becomes first professional golfer to win same tournament five-straight times at Mizuno Classic.
28–31 July: U.S. Senior Open - Allen Doyle won his third senior major. Doyle, who started the final round nine shots out of the lead, shot a final-round 63, a course record which tied for the lowest round ever in the U.S. Senior Open, and saw the leaders come back to him. Doyle would win by one stroke. His final-round comeback is unprecedented in the history of the senior majors; in the mainstream majors, only Paul Lawrie's comeback from 10 shots down on the final day of the 1999 Open Championship surpasses this feat.
13–14 August: Walker Cup - The United States won for the first time since 1997. Great Britain and Ireland needed to win the 18th hole of the last match on the course to tie that match and the Cup, and thus retain the trophy, but did not do so.