23 March.Chicago, IL, USA
The 32-year-old Argentine player has won 22 ATP titles including 2009 US Open championship. (Photo Credit: Twitter/ @delpotrojuan)

  • Tennis player Juan Martin del Potro said he will undergo a fourth operation on his right knee
  • He said that he would undergo operation to be fit for the Olympic Games in Tokyo
  • Del Potro is a known tennis player and has won many titles including US Open