FILE - In this Monday, July 30, 2012 file photo, a paddle sits on the table during the men's table tennis competition at the 2012 Summer Olympics, in London. Table tennis has its own ve

 

              FILE - In this Monday, July 30, 2012 file photo, a paddle sits on the table during the men
FILE - In this Monday, July 30, 2012 file photo, a paddle sits on the table during the men's table tennis competition at the 2012 Summer Olympics, in London. Table tennis has its own version of ``doping.'' It has nothing to do with ingesting banned substances. Just as other Olympic athletes, pingpong players are regularly tested for those. Pingpong's problem involves players applying performance enhancing materials to the racket, or paddle, to get more grip, spin and speed. The substances go by various names _ speed glue, booster or tuner.(AP Photo/Sergei Grits)