This is the second-longest break Woods has taken from golf because of injury. He missed the second half of the 2008 season when he had reconstructive surgery on his left knee just a week after winning the U.S. Open for his 14th major.
Even though he spent the offseason working on his body, there were signs early that something might be wrong.
He missed the 54-hole cut at Torrey Pines, where he was the defending champion and an eight-time winner at one of his favorite courses. He had his worst finish ever at Dubai when he tied for 41st. Then, he withdrew in the final round of the Honda Classic because of back spasms, and despite being in the penultimate group at Doral, he struggled badly with his back on the final day after taking a swing from an awkward stance outside a bunker.
Woods had microdiscectomy surgery a week before the Masters, and he has said in rare appearances that he did not know how long it would take to properly heal. His agent, Mark Steinberg at Excel Sports Management, said earlier this week that Woods was making enough progress to extend his swing.
Even so, playing the Quicken Loans National was thought to be too soon.
It couldn't come soon enough for the tournament.
"We're thrilled, obviously," said Mike Antolini, the tournament director and vice president of championships for the Tiger Woods Foundation. "Anytime you get that call and Tiger is in your field, it's really the best news you can get. The fact he's a two-time champion and the tournament hosts, we're very excited for the fans."
He said he expected a spike in ticket sales with Friday's announcement.
The strength of Quicken Loans National field has suffered in recent years as more Europeans moved into the top 20 in the world, and they headed across the Atlantic Ocean as the European Tour headed places like Ireland, France and Scotland leading up to the British Open.