Rocco Mediate is confident he could get Tiger Woods back to fitness and back to winning ways, despite the former world number one saying he has no timetable for a return to the course.
The 14-time major champion has been plagued by injuries in recent years and earlier this week said he does not know when he will play again.
Woods had microdiscectomy surgery for the second time in September, before undergoing a follow-up procedure a month later.
Mediate was beaten by Woods in a play-off at the 2008 U.S. Open, and Woods has not won a major since that triumph at Torrey Pines.
However, Mediate - who says he has not spoken to Woods in years - has also struggled with back problems for much of his career and believes his wisdom could help Woods reprise his former glory.
"It was a simple prediction to see what would happen to this kid," Mediate said. "The way he moves the club has destroyed one of the most in-shape people on earth.
"But I can assure you one thing. I can make him understand what it will take to get the stress off the body.
"I can't compare anything to this man, but one thing I can tell you is that I came back from back surgery that was supposed to be the end of my golf life.
"I'm [angry] that he doesn't have 28 majors. I'm sick to my stomach. I would like to say something to him, just 45 minutes to an hour. He's very fixable and can get back to winning.
"He'll never ask me, but he's not through yet unless he keeps doing what he's doing. If he talked to somebody who had a back issue he might get something out of it.
"I've been there. I know how to help him take stress off his back.
"This guy is one of the strongest guys on the planet - it's so simple. I want to see Tiger down the last nine holes with the big guns, with Rory McIlroy, Jordan Spieth and Jason Day. I want to see what happens when Tiger is Tiger."