AT&T National: Won his own tournament, the AT&T National hosted by Tiger Woods, with a late birdie at Congressional CC. Was tied for the lead with Anthony Kim entering the final round and was tied at 12-under with Hunter Mahan late in the back nine. Made a 20-foot birdie putt on the par-5 16th hole and fired a closing 67 to get past Mahan and capture the title by one stroke. Mahan tied the course record with a 62 earlier in the day. The win was the third of the season, the 68th of his PGA TOUR career and moved him to the top of the FedExCup standings for the first time in 2009.
World Golf Championships-American Express Championship: Picked up his fourth World Golf Championships-American Express Championship victory by coming from two strokes back and defeating John Daly in a two-hole playoff at Harding Park GC in San Francisco. Won for the 10th time in 19 World Golf Championships starts and improved his career playoff record to 8-1. The win was his ninth in California.
Woods wrote a golf instruction column for Golf Digest magazine from 1997 to February 2011. In 2001 he wrote a best-selling golf instruction book, How I Play Golf, which had the largest print run of any golf book for its first edition, 1.5 million copies. In March 2017, he published a memoir, The 1997 Masters: My Story, co-authored by Lorne Rubenstein, which focuses on his first Masters win.
A related effect was measured by University of California economist Jennifer Brown, who found that other golfers scored higher when competing against Woods than when he was not in the tournament. The scores of highly skilled golfers are nearly one stroke better when playing against Woods. This effect was larger when he was on winning streaks and disappeared during his well-publicized slump in 2003–04. Brown explains the results by noting that competitors of similar skill can hope to win by increasing their level of effort, but that, when facing a "superstar" competitor, extra exertion does not significantly raise one's level of winning while increasing risk of injury or exhaustion, leading to reduced effort.
Kultida (née Punsawad) is originally from Thailand, where Earl had met her when he was on a tour of duty there in 1968. She is of mixed Thai, Chinese, and Dutch ancestry. Earl was a retired lieutenant colonel and Vietnam War veteran who reported African American, Chinese, and Native American descent. Earl's mother Maude Carter was light skinned. Tiger describes his ethnic make-up as "Cablinasian" (a syllabic abbreviation he coined from Caucasian, Black, American Indian, and Asian).
Surgery: Announced on Wednesday, June 18, two days after winning the U.S. Open, that he would have reconstructive surgery on the anterior cruciate ligament in his left knee and miss the remainder of the 2008 season. Also announced that pain in his leg during the U.S. Open resulted from a double stress fracture to his left tibia, which he suffered while rehabilitating the knee. Surgery was performed on Tuesday, June 24 in Park City, Utah, by Dr. Thomas D. Rosenberg and Dr. Vernon J. Cooley, who did arthroscopic surgery on the same knee in April.
TOUR Championship: Claimed his 80th PGA TOUR title (second most behind Sam Snead's 82) with a two-stroke victory over Billy Horschel for his third-career TOUR Championship title (1999, 2007, 2018). Prior to his win at East Lake, it had been 1,876 days since he last won on the PGA TOUR (2013 World Golf Championships-Bridgestone Invitational). Moved from No. 20 to No. 2 in the FedExCup standings, finishing 41 points behind Justin Rose (T4) to become the fourth winner of the TOUR Championship who did not claim the FedExCup. Shared the first-round lead with Rickie Fowler (5-under 65) and the second-round lead with Rose (7-under 133) before moving to a three-stroke lead over Rory McIlroy following a third-round 5-under 65. Following a closing 1-over 71, improved to 54/58 when holding at least a share of the 54-hole lead on the PGA TOUR, including a 43/45 mark with the outright lead. Bogeys on Nos. 15 and 16 made things interesting coming down the stretch, but clutch pars on the final two holes sealed the victory. His 80th TOUR win came in his 346th start at the age of 42 years, 8 months and 24 days. By comparison, Snead was 47 when he won his 80th title. The victory was his fourth FedExCup Playoffs tournament title (2007 BMW Championship, 2007 TOUR Championship, 2009 BMW Championship, 2018 TOUR Championship. Ranked No. 2 in Strokes Gained: Putting for the week, making over 100 feet of putts each of the first three rounds and totaling 386'5" for the week (112'7"/R1, 101'5"/R2, 112'8"/R3, 59'9"/R4). Last posted his first three rounds in the 60s in a PGA TOUR event at the 2015 Wyndham Championship, but final-round 71 kept him from posting all four rounds in the 60s for the first time since THE NORTHERN TRUST 2013. Marked his 15th appearance in the TOUR Championship (first since 2013), with nine top-10 showings at the event, including three wins and four runner-up finishes.
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.