Having been ranked No. 65 going into the summer, Del Potro left the US Open at No. 13, right before his 20th birthday ... “I think I’m the most happy of the world at this moment,” the ...

At 36 years old, Juan Martín Del Potro officially celebrated his farewell ... "Tonight is a sad one for the world of tennis, but I feel happy because we are here to celebrate Juan Martín's ...