World Golf Championships-Dell Technologies Match Play: In his first start at the World Golf Championships-Dell Technologies Match Play since 2013, and first start in the state of Texas since 2005, advanced to the Quarterfinals to finish T5 in the event. Playing at Austin Country Club for the first time in his career, earned two points to advance out of his group after defeating Aaron Wise and Patrick Cantlay. Suffered a 2-and-1 loss to Brandt Snedeker. Went head-to-head with Rory McIlroy for the first time with their match up in the Round of 16. Defeated McIlroy, 2 and 1, before falling to Denmark's Lucas Bjerregaard, 1-up.

On March 18, 2013, Woods announced that he and Olympic gold medal skier Lindsey Vonn were dating.[237] They split up in May 2015.[238] From November 2016 to August 2017, Woods was in a relationship with stylist Kristin Smith.[citation needed] Woods announced in November 2017 that he was in a relationship with restaurant manager Erica Herman, following speculation about their relationship that began the month prior.[citation needed]
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Set or tied 27 TOUR records. Won three consecutive majors (U.S. and The Open Championships, PGA Championship) and career Grand Slam and totaled nine TOUR victories. Non-adjusted scoring average of 68.17 best in golf history, surpassing Byron Nelson's 68.33 unofficial mark of 1945. Finished the year with 47 consecutive rounds of par or better and completing all 20 events started under par. Won TOUR player of the year honors. Joined Ben Hogan (1953) as the only men to win three professional majors in one season. Was 53-under in four majors, next-best mark was 18-under by Ernie Els. Nine TOUR victories most in one season since Sam Snead won 11 in 1950. Season-opening victories at Mercedes Championship and AT&T Pebble Beach National Pro-Am gave him wins in six consecutive starts, most since Hogan in 1948. Beat Els in a playoff at Mercedes, then came from seven strokes back with seven holes to play at Pebble Beach, keyed by an eagle-birdie-par-birdie finish, for a 64 and a two-stroke win. Finished T2 at Buick Invitational.
Won seven times en route to capturing the inaugural FedExCup, cruising through the PGA TOUR Playoffs for the FedExCup with two wins and a T2 in three starts. Captured 13th career major championship (second all-time to Jack Nicklaus' 18) and finished the year with 61 official PGA TOUR victories, fifth all-time. Adjusted scoring average was 67.79, matching own record set in 2000. With 60 official rounds, won his seventh career Vardon Trophy and also captured the Byron Nelson Award.
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