Woods returned to competition in April at the 2010 Masters, where he finished tied for fourth place. He followed the Masters with poor showings at the Quail Hollow Championship and the Players Championship, where he withdrew in the fourth round, citing injury. Shortly afterward, Hank Haney, Woods' coach since 2003, resigned the position. In August, Woods hired Sean Foley as Haney's replacement. The rest of the season went badly for Woods, who failed to win a single event for the first time since turning professional, while nevertheless finishing the season ranked No. 2 in the world.
Ryder Cup: Made his sixth Ryder Cup appearance, but first as a Captain's Pick, where he was victorious in three of the four matches in which he was involved. With 16 World Golf Championships titles and 28 top-10 finishes in 32 starts, returned to Sheshan International GC in Shanghai to try and add the HSBC Champions title, the only World Golf Championships title he has yet to capture, to his resume. Twice a runner-up in three previous starts, made five birdies on his inward nine in the final round to shoot a 4-under 68, good for T6 honors.
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).
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.
Since 1996, the Tiger Woods Foundation has reached more than 10 million young people by delivering unique experiences and innovative educational opportunities for youth worldwide. For scholars grades 5-12, the Tiger Woods Learning Centers provide hands-on experiences in science, technology, engineering and math, coupled with college-preparation workshops to create an environment focused on college and careers. Since opening its flagship Learning Center in Anaheim, Calif., the Foundation has established campuses in Washington, D.C., Pennsylvania and Florida. Once kids are ready for college, the Foundation offers the Earl Woods Scholarship Program, a network providing college scholarships, mentors, internships and workshops.
Following an outstanding junior, college, and amateur golf career, Woods turned professional in 1996 at the age of 20. By the end of April 1997, he had won three PGA Tour events in addition to his first major, the 1997 Masters, which he won by 12 strokes in a record-breaking performance. He reached number one in the world rankings for the first time in June 1997, less than a year after turning pro. Throughout the first decade of the 21st century, Woods was the dominant force in golf. He was the top-ranked golfer in the world from August 1999 to September 2004 (264 weeks) and again from June 2005 to October 2010 (281 weeks). During this time, he won 13 of golf's major championships.
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.