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.
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.
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).
Ford Championship at Doral: Took over as World No. 1 for the first time since the week of Aug. 30, 2004 by defeating Phil Mickelson by a stroke at the Ford Championship at Doral. Paired with Mickelson in the final round for just the third time in his career, began the day two strokes behind. Caught up to Mickelson at the turn and took a two-stroke lead after an eagle on the par-5 12th hole. Mickelson birdied the next two and both bogeyed the 16th to remain tied with two holes to play. Birdied the 17th hole and when Mickelson's chip on No. 18 lipped out, earned the 42nd victory of his career.
On February 19, 2010, Woods gave a televised statement in which he said he had undertaken a 45-day therapy program that began at the end of December. He again apologized for his actions. "I thought I could get away with whatever I wanted to," he said. "I felt that I had worked hard my entire life and deserved to enjoy all the temptations around me. I felt I was entitled. Thanks to money and fame, I didn't have to go far to find them. I was wrong. I was foolish." He said he did not know yet when he would be returning to golf. On March 16, he announced that he would play in the 2010 Masters.
Woods collaborated closely with TAG Heuer to develop the world's first professional golf watch, which was released in April 2005. The lightweight, titanium-construction watch, designed to be worn while playing the game, incorporates numerous innovative design features to accommodate golf play. It is capable of absorbing up to 5,000 Gs of shock, far in excess of the forces generated by a normal golf swing. In 2006, the TAG Heuer Professional Golf Watch won the prestigious iF product design award in the Leisure/Lifestyle category.
Arnold Palmer Invitational presented by MasterCard: Birdied the 72nd hole to beat Sean O'Hair by one stroke and claim his sixth Arnold Palmer Invitational presented by MasterCard. Sank a 15-foot birdie putt on the final green, duplicating his last-putt heroics from two previous years (2001, 15-foot birdie putt to beat Phil Mickelson; 2008, 24-foot birdie putt to beat Bart Bryant). Matched his largest comeback after 54 holes (five strokes) with his victory. He also came back from five strokes behind after 54 holes to win the 2000 AT&T Pebble Beach National Pro-Am (Mark Brooks and Matt Gogel). Out of 66 career wins, it was his 19th coming from behind. Became the first player to win six Arnold Palmer Invitational titles. The only other players with multiple victories at the event are Tom Kite (1982 and 1989) and Loren Roberts (1994-95).
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.
ZOZO CHAMPIONSHIP: Won his 82nd PGA TOUR title at The ZOZO CHAMPIONSHIP, tying Sam Snead for the most wins in PGA TOUR history. Improved to 44-for-46 (95.6%) in his career with the outright 54-hole lead and 25-for-25 when leading by three shots or more after 54 holes. Marked his 14th career victory when leading/co-leading after each round. Played the par-3s in 9-under (field-best), reaching that mark for the first time in his career. Became the first player in the ShotLink era (since 2003) to bogey each of the first three holes of a tournament and go on to win. Opened with three rounds of 66 or better for the fourth time in his career (won all four).
Surgery: Pulled out of next two PGA TOUR starts, the Genesis Open and The Honda Classic. Released statement: "My doctors have advised me not to play the next two weeks, to continue my treatment and to let my back calm down. This is not what I was hoping for or expecting. I am extremely disappointed to miss the Genesis Open, a tournament that benefits my foundation, and The Honda Classic, my hometown event. I would like to thank Genesis for their support, and I know we will have an outstanding week." In April, announced on his website he had undergone further back surgery. The operation was performed by Dr. Richard Guyer of the Center for Disc Replacement at the Texas Back Institute.