Tiger Woods, his game imploding with every wayward shot, missed the cut for only the sixth time as a professional Friday after a woeful second round of 79 at the Quail Hollow championship. The world No. 1 cut a forlorn figure as he trudged off the course after limping to the halfway stage at nine-over-par, eight shots off the projected cut-off following his opening round of 74. As Woods struggled, many of his main rivals, including US Masters champion Phil Mickelson, ripped up the course on a perfect spring day. American Billy Mayfair shot 68 to lead at eight-under, one ahead of Argentina's Angel Cabrera and two ahead of Mickelson, but their performances were completely overshadowed by the almost-unimaginable showing by Woods. It was the first time Woods had missed the cut at any event since last year's British Open and the first on home soil since the 2006 US Open but it was the manner of his early exit that was most alarming. Playing only his second event since taking a five-month break from the game following revelations about his infidelity, Woods at times looked like a weekend hacker as his game unravelled on the back nine. He then bogeyed the 10th, 11th and 12th holes to suddenly drop back to five-over-par. He stopped the bleeding with a par at the 13th before making a double-bogey at the 14th when he pitched over the green and into the water. Worse was to come at the next hole when he four-putted for another double bogey. He closed with three pars to avoid shooting an embarrassing 80 but that failed to save him from an early exit. Mickelson, who was ill from food poisoning and faded late in his opening round, looked a picture of health as he shot a four-under-par 68 to be suddenly feeling upbeat about his chances. With a handful of players still to finish their rounds, he was tied for third with J.P. Hayes, who fired a course record-equalling 64, and Dustin Johnson, who shot a 65. Edfors in front In Spain, Johan Edfors of Sweden put himself in position for a first European Tour victory in four years by shooting an 8-under 64 Friday to open up a one-shot lead after the second round of the Spanish Open. The 34-year-old Edfors made nine birdies to go with his only bogey on the 17th for a 10-under 134 total, to sit one shot ahead of Mark Foster of England and Sebi Garcia of Spain. Garcia made five birdies on his last seven holes to surge through the field. Foster had seven birdies in a round of 66. First-round leader Ricardo Gonzalez just barely made the cut after slipping to a 79 following his 65 Thursday. Miyazato takes lead In Mexico, Ai Miyazato of Japan, who has won two of the season's first four events this season, has the early lead in the Tres Marias Championship, two strokes ahead of Spanish rookie Azahara Munoz. Miyazato shot 10-under-par 63 Thursday on the par-73 course. Munoz had 65. Miyazato won the Evian Masters last season - her first LPGA Tour victory - and has risen to fifth the world rankings. Although she doesn't hit long off the tee, she's accurate and needed just 22 putts Thursday. The top-ranked Lorena Ochoa, who is retiring after this tournament, was three shots back with a 66. She was tied with Michelle Wie. About half the field was still on the course.