Vijay Singh filed a lawsuit against the PGA Tour on Wednesday, claiming that the tour caused "public humiliation and ridicule for months" after he admitted using deer antler spray.

Singh admitted using deer antler spray in an article on Sports Illustrated's website, SI.com, on Jan. 29. At the time, the spray was on the tour's banned substance list.

The tour adopted its list from the World Anti-Doping Agency. Singh's lawsuit claimed that the tour failed to "determine, in a responsible way, and without any scientific examination, whether the Spray in fact fell within the Anti- Doping Program's definition of 'banned substance.'"

In April, WADA took deer antler spray off its banned substance list. Shortly thereafter, the PGA Tour dropped any sort of case against Singh, although he contends in his suit that the tour tried suspending him for 90 days. He appealed and claims his $99,980 in earnings during the appeals process have been held in escrow.

Singh's attorney, Peter J. Ginsberg said in a statement: "The PGA Tour has now finally admitted that the use of deer antler spray is not prohibited. Rather than performing its duties to golfers first, and then determining whether there had been any violation of the Anti-Doping Program, the PGA Tour rushed to judgment and accused one of the world's hardest working and most dedicated golfers of violating the rules of the game.

"I am proud of my achievements, my work ethic, and the way I live my life. The PGA Tour not only treated me unfairly, but displayed a lack of professionalism that should concern every professional golfer and fan of the game," Singh said in a statement.

His lawsuit was filed in New York where he has a residency and the tour has an office.

Singh is still in the field Thursday for the Players Championship, which is the flagship event of the PGA Tour. He is a three-time major champion and a member of the World Golf Hall of Fame.