New Zealander Steve Williams says his former boss Tiger Woods is unlikely to win another major and suggested his latest injury problems might be self inflicted due to training too hard in the gym.
In an interview with BBC Radio 5 Live, caddie Williams, who parted with Woods on bad terms in 2011 and who now works for Australian Adam Scott, said of the American: "I don't doubt he will come back to the winner's circle. He is a great competitor, he has an incredible work ethic - when he can work hard - and one thing he does know how to do is win.
"But whether he comes back and wins major championships? That's going to be a very difficult task."
Williams helped Woods win 13 of his 14 major titles but since his last one, the US Open at Torrey Pines in 2008, he has fallen to 467 in the world and suffered back problems which required surgery. He has also suffered from well publicised personal issues.
Williams, 39, said in December he had "nothing to look forward to".
In comments which are unlikely to endear him further to his former boss, Williams added: "I guess when he looks back, he might question some of the activities that he did, some of the gym work that he might have done that, you know, had all these injuries escalate.
"It is very hard to pinpoint how he has got to where he is now but I'd have to say there is a lot merit in [Woods' injuries being caused by him training as an athlete rather than a golfer]."
Williams said of working with Scott, ranked No6 in the world: "Caddying for Adam has been like a breath of fresh air for me. I'm really looking forward to seeing if he can win one more.
"I always say to Adam, many players win one major and that's great but to be recognised as one of the top players in the game ... you want to have multiple majors beside your name."