Tiger Woods faces further questions over his future in golf after being forced to withdraw from the Farmers Insurance Open in California on Thursday.
Woods missed last year's Masters and the US Open after having surgery on a pinched nerve and only managed 11 holes in his first round at Torrey Pines before pulling out of the tournament.
The 14-time Major winner appeared to hurt his back after hitting his tee shot at the 12th - his third hole of the day - but carried on for eight more holes before calling it a day.
Woods said this was the first time he has experienced such a situation as he tries to manage his comeback.
Tiger Woods has said he will "keep fighting" after he plunged to new depths with the worst score of his professional career in Friday's second round at the TPC Scottsdale.
The 14-times major champion was out-of-sorts in every phase of his game as he struggled to an 11-over-par score of 82 at the Phoenix Open.
Woods was competing at Scottsdale in only his second event in five months after suffering back problems for most of last year after undergoing surgery.
Tiger Woods made his worst score as a professional golfer when he shot 82 at a US tournament on Friday,
The former world number one had a terrible day at the office during the second round of the Waste Management Phoenix Open, finishing 11 over par and missing the cut.
Woods had only failed to qualify for the final 36 holes on 12 occasions until today in 19 years as a pro golfer and it was only the second time that he failed to break 80.
Woods' previous worst effort came at the 2002 Open Championship at Muirfield when, in horrendous conditions, he shot 81 in the third round but he went one worse than that in Arizona.
The 39-year-old was playing in playing in only his second event since missing the cut at the PGA Championship in August last year.
Tiger Woods has lost a tooth after being hit in the mouth by a video camera, the Associated Press reports.
The news agency published a photo that appears to show the pro golfer missing one of his front teeth.
BBC Sport quotes Woods' agent Mark Steinberg as saying: "During a crush of photographers at the awards' podium, a media member with a shoulder-mounted video camera pushed and surged towards the stage, turned and hit Tiger Woods in the mouth."
Almost five years on from the car crash which precipitated his fall from grace, Tiger Woods looks to have committed another major PR blunder with his attack on veteran journalist Dan Jenkins.
Jenkins wrote a parody interview in the December issue of Golf Digest magazine headlined "My (Fake) Interview With Tiger", with a subheading of "Or how it plays out in my mind".
Woods certainly does not see the joke, labelling it a "a grudge-fuelled piece of character assassination".
But despite starting his complaint on theplayerstribune.com by hoping that people had not read the article in question, all the 14-time major winner has done is ensure that thousands, if not millions, who had absolutely no intention of doing so, will do so now.
Golf star Tiger Woods has ruled himself out of selection for the United States Ryder Cup team due to back problems, according to Reuters.
Tiger Woods has announced that he will return to competitive golf next week following back surgery.
The 38-year-old pro golfer, who has been out of the sport since March, wrote on his Facebook page: "After a lot of therapy I have recovered well and will be supporting my foundation next week at the Quicken Loans National.
"I've just started to hit full shots but it's time to take the next step. I will be a bit rusty but I want to play myself back into competitive shape. Excited for the challenge ahead."
England's Ian Poulter, Lee Westwood and world number four Adam Scott finished joint-third on level par on the final day at the Open Championship at Muirfield.
Phil Mickelson has said he played the "round of his career" and "putted better than he ever putted" to claim his first British Open championship.
Mickelson finished top at Muirfield on -3 to come top at the 142nd Open Championship - his fifth major title.
USA's Phil Mickelson has won his first British Open title and his fifth major at Muirfield.