Tiger Woods retires during final round of WGC-Bridgestone Invitational . Jarred his back shooting out of the bunker on the second hole . - The U.S. Open is won by Rory McIlroy, who wins in a playoff over Sergio Garcia and Jason Dufner. He 's now a doubt for the PGA Championship and Ryder Cup .
Tiger Woods retires during final round of WGC-Bridgestone Invitational . Jarred his back shooting out of the bunker on the second hole . Woods only recently returned from back surgery three months ago . He 's now a doubt for the PGA Championship and Ryder Cup .