Vijay Singh walks off the practice putting green prior to a practice round for the PGA Tour Wells Fargo Championship golf tournament in Charlotte, N.C. on Tuesday, April 30, 2013. The

 

              Vijay Singh walks off the practice putting green prior to a practice round for the  PGA Tour Wells Fargo Championship golf tournament in Charlotte, N.C. on Tuesday, April 30, 2013. The
Vijay Singh walks off the practice putting green prior to a practice round for the PGA Tour Wells Fargo Championship golf tournament in Charlotte, N.C. on Tuesday, April 30, 2013. The PGA Tour dropped its doping case against Vijay Singh on Tuesday based on new information from the World Anti-Doping Agency, which said using deer antler spray is no longer prohibited because it contains such small amounts of a growth hormone factor. (AP Photo/The Charlotte Observer, Jeff Siner)