The Open Championship: Finished T6 at the 147 Open Championship at Carnoustie, his first top-10 in a major since at T6 at the 2013 Open Championship. Week was highlighted by a third-round 66, his lowest round in a major since a 66 in the second round of the 2011 Masters. Was just his second made cut (2018 Masters Tournament/T32) in his last six major starts. Posted rounds of 71-71-66-71, the first time since the 2010 Masters Tournament (T4) he recorded four par-or-better rounds in a major. Paired with eventual-champion Francesco Molinari, entered the final round four shots off the lead. Took the solo-lead at 7-under after nine holes, one ahead of Molinari and Jordan Spieth, but his lead disappeared with a double bogey at No. 11. Bogeyed No. 12 and birdied No. 14 before closing with four pars to finish at 5-under. The finish moved him to No. 50 in the Official World Golf Ranking, returning to the top 50 for the first time since January 2015. The ranking also earned him a spot in the World Golf Championships-Bridgestone Invitational.
The Barclays: Finished T38 in his seventh start at The Barclays, with a 76 in the final round of The Barclays tying his second-highest score when entering the final round T10 or better (he was T10 after 54 holes this week). In 2007 at the Arnold Palmer Invitational, was T10 after 54 holes and shot 76 to finish T22. At the 1998 Arnold Palmer Invitational, was T2 after 54 holes and shot 77 to finish T13.
In 1997, Woods and fellow golfer Arnold Palmer initiated a civil case against Bruce Matthews (the owner of Gotta Have It Golf, Inc.) and others in the effort to stop the unauthorized sale of their images and alleged signatures in the memorabilia market. Matthews and associated parties counterclaimed that Woods and his company, ETW Corporation, committed several acts including breach of contract, breach of implied duty of good faith, and violations of Florida's Deceptive and Unfair Trade Practices Act. Palmer also was named in the counter-suit, accused of violating the same licensing agreement in conjunction with his company Arnold Palmer Enterprises.
PGA Championship: Won 12th major at the PGA Championship at Medinah CC, moving into solo second behind Jack Nicklaus (18) on the career majors list. First player to win two PGAs at the same course (1999 and 2006). Recorded four rounds in the 60s (69-68-65-68) for just the second time in a major (2000 Open Championship). Tied the tournament record which he set with Bob May in 2000 (18-under 270). Became the 29th player in major championship history to collect two major wins in the same year, this being his fourth time.
During the first decade of his professional career, Woods was the world's most marketable athlete. Shortly after his 21st birthday in 1996, he signed endorsement deals with numerous companies, including General Motors, Titleist, General Mills, American Express, Accenture, and Nike, Inc. In 2000, he signed a 5-year, $105 million contract extension with Nike, which was the largest endorsement package signed by a professional athlete at that time. Woods' endorsement has been credited with playing a significant role in taking the Nike Golf brand from a "start-up" golf company earlier in the previous decade to becoming the leading golf apparel company in the world and a major player in the equipment and golf ball market. Nike Golf is one of the fastest growing brands in the sport, with an estimated $600 million in sales. Woods has been described as the "ultimate endorser" for Nike Golf, frequently seen wearing Nike gear during tournaments, and even in advertisements for other products. Woods receives a percentage from the sales of Nike Golf apparel, footwear, golf equipment, golf balls, and has a building named after him at Nike's headquarters campus in Beaverton, Oregon.
Woods is registered as an independent voter. In January 2009, Woods delivered a speech commemorating the military at the We Are One: The Obama Inaugural Celebration at the Lincoln Memorial. In April 2009, Woods visited the White House while promoting the golf tournament he hosts, the AT&T National. In December 2016 and again in November 2017, Woods played golf with President Donald Trump at the Trump International Golf Club in West Palm Beach.
Early in Woods' career, a small number of golf industry analysts expressed concern about his impact on the competitiveness of the game and the public appeal of professional golf. Sportswriter Bill Lyon of Knight Ridder asked in a column, "Isn't Tiger Woods actually bad for golf?" (though Lyon ultimately concluded that he was not). At first, some pundits feared that Woods would drive the spirit of competition out of the game of golf by making existing courses obsolete and relegating opponents to simply competing for second place each week.
On May 29, 2017, Woods was arrested near his Jupiter Island, Florida, home by the Jupiter Police Department at about 3:00 am. EDT for driving under the influence of alcohol or drugs. He was asleep in his car, which was stationary in a traffic lane with its engine running. He later stated that he had taken prescription drugs and did not realize how they might interact together. On July 3, 2017, Woods tweeted that he had completed an out-of-state intensive program to tackle an unspecified issue. At his August 9, 2017 arraignment, Woods had his attorney Douglas Duncan submit a not guilty plea for him and agreed to take part in a first-time DUI offender program and attend another arraignment on October 25.
the Memorial Tournament: Birdied the last two holes to shoot a final-round 65 and win the Memorial Tournament for the fourth time, beating Jim Furyk by one stroke. Trailed by four strokes entering the final round. Hit all 14 fairways in the final round and recorded his 20th come-from-behind victory in his 67th career victory. Chipped in for eagle from behind the green on the par-5 11th hole and was tied with Furyk, Jonathan Byrd and Davis Love III at 10-under with two holes remaining before his final surge.
PGA Championship: Despite not hitting a fairway until the 10th hole Sunday, made eight birdies and two bogeys to post a 6-under 64, tying the day's low round. Finished solo-second at 14-under 266, two strokes behind Brooks Koepka. The runner-up finished marked his 31st on the PGA TOUR and first time taking solo-second since the 2009 TOUR Championship. Was looking to tie Jack Nicklaus and Walter Hagen for most PGA Championship victories. A win would have marked his first major championship title since the 2008 U.S. Open, a span of 3,709 days.
Arnold Palmer Invitational presented by Mastercard: In his first start in the Arnold Palmer Invitational presented by Mastercard since his win in 2013, finished T5 after a final-round 69. Was five strokes back of leader Henrik Stenson after 54 holes, and got to within one of the lead with three holes to play, but posted back-to-back bogeys at Nos. 16 and 17. Improved to 118-under par at the Arnold Palmer Invitational, 44 strokes better than the next best player (Vijay Singh, 74-under). Marked his 10th top-10 (eight wins) in 18 starts at the event.