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.
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.