BMW Championship: Captured his sixth title of the season and took the lead in the FedExCup standings with an eight-stroke victory over Jim Furyk and Marc Leishman at the BMW Championship. Shot a third-round, course-record 62 at Cog Hill to take a seven-stroke lead entering the final round and finished at 19-under 265 to win for the fifth time at Cog Hill. It was his 10th career PGA TOUR victory by at least eight shots. It was also his 71st career victory, two short of Jack Nicklaus for second on the PGA TOUR's career list. Also tied Sam Snead with his sixth season of at least six victories.
Farmers Insurance Open: In his season debut on the PGA TOUR, became the first player in TOUR history to win on the same course eight times with his Farmers Insurance Open victory at Torrey Pines GC. The win marked the sixth time on TOUR he has won in his season debut. His seventh Farmers Insurance Open win came five years after his U.S. Open win at Torrey Pines. At 14-under 274, won by four strokes over defending champion Brandt Snedeker and Josh Teater. He converted the 54-hole lead into victory for the 50th (of 54) time. With the win, the Farmers Insurance Open became the third event in which he has won seven times, the World Golf Championships-Bridgestone Invitational and Arnold Palmer Invitational being the others. In the previous six years he has won this event, he has gone on to win at least four times in each of those years. His 75th TOUR victory is just seven shy of the all-time record of 82, held by Sam Snead.
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.