The former world golf number one and three-time major winner Vijay Singh won't be suspended by the US PGA Tour for doping.
Although he never failed a drugs test, Singh was ruled to have breached golf's rules on doping when he told Sports Illustrated earlier this year he had used deer antler spray which contains a prohibited growth-enhancing substance.
Singh appealed a sanction brought against him by the Tour.
While there is no blood test for growth hormone substance PGA policy allows for a violation without a positive test if a player admits using a banned substance.
But the World Anti Doping Agency has told the PGA it no longer considers using the deer antler spray to be prohibited unless it leads to a positive test.