In the days and months following Woods' admission of multiple infidelities, several companies re-evaluated their relationships with him. Accenture, AT&T, Gatorade and General Motors completely ended their sponsorship deals, while Gillette suspended advertising featuring Woods.[84][218] TAG Heuer dropped Woods from advertising in December 2009 and officially ended their deal when his contract expired in August 2011.[84] Golf Digest suspended Woods's monthly column beginning with the February 2010 issue.[219] In contrast, Nike continued to support Woods, as did Electronic Arts, which was working with Woods on the game Tiger Woods PGA Tour Online.[220] A December 2009 study estimated the shareholder loss caused by Woods's affairs to be between $5 billion and $12 billion.[221]
The Open Championship: Earned 10th professional major title at The Open Championship at age 29 years, 6 months and 17 days in his 35th major as a professional. Posted rounds of 66-67-71-70–274 at St. Andrews to defeat nearest challenger Colin Montgomerie by five strokes. The youngest and quickest to win each of the four major championships twice. Jack Nicklaus was the first to accomplish the feat at 31 years, 1 month and 7 days when he won his second PGA in 1971 in his 37th major as a professional. Sixth player in The Open Championship history to win in wire-to-wire fashion–Ted Ray (1912), Bobby Jones (1927), Gene Sarazen (1932), Henry Cotton (1934) and Tom Weiskopf (1973).
THE PLAYERS Championship: Kept streak alive of 12 career made cuts in as many attempts at THE PLAYERS, with eighth-place finish, snapping a string of six consecutive appearances at the event without a top-10 finish (dating back to his win in 2001). The six consecutive events without notching a top-10 finish represents his longest streak at any single event in his career.

Buick Invitational: Won his first start of the season for the fourth time in 11 seasons on TOUR. Became the first player in Buick Invitational history to win the tournament four times (1999, 2003, 2005-06). Made an eight-foot birdie on 72nd hole to get into a three-man playoff with Jose Maria Olazabal and Nathan Green. Green was eliminated after first hole, Olazabal on the second.
Hero World Challenge: Hero World Challenge host finished T9 and 10 strokes behind champion Rickie Fowler. Marked his first appearance in competition since withdrawing from the Omega Dubai Desert Classic on February 2, 2017. Week included playing in the first and final round with reigning FedExCup champion and PGA TOUR Player of the Year Justin Thomas, with both players posting scores of 69-68 in those rounds.

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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