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.
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.
World Golf Championships-Bridgestone Invitational: Finished T8 at the World Golf Championships-Bridgestone Invitational, which, coupled with his T3 at The Open Championship, gave him back-to-back top-10s in a season for first time since winning the 2009 BMW Championship and finishing runner-up at the TOUR Championship by Coca-Cola. It also snapped a career-long streak of three starts in World Golf Championships events without a top-10. His 11 top-10s at the Bridgestone Invitational, seven of which are wins, is a tournament-high.
At a hearing on October 27, 2017, Woods pleaded guilty to reckless driving. He received a year of probation, was fined $250, and ordered to undergo 50 hours of community service along with regular drug tests. He was not allowed to drink alcohol during the probation, and if he violated the probation he would be sentenced to 90 days in jail with an additional $500 fine.
World Golf Championships-Accenture Match Play Championship: Captured second consecutive World Golf Championships-Accenture Match Play Championship for 40th career PGA TOUR win. With six match victories, including a 3-and-2 win over Davis Love III in the 36-hole finale, has won 12 consecutive matches, and overall Accenture Match Play Championship record is 20-3.
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.