tennis Ivo Karlovic formally declares his retirement from tennis 2 months ago Ivo Karlovic has officially announced his retirement from tennis after not playing in a tournament match for two and a… Serena Williams declares she will “evolve away from tennis” after upcoming US Open 2 years ago After this year's US Open, Serena Williams has declared that she will "evolve away from tennis" in order to concentrate… Monica Puig, the Olympic gold medallist in tennis, announces her retirement from game 2 years ago Monica Puig, the Olympic gold medallist in tennis, announced her retirement on Monday. In an Instagram post, the 28-year-old noted her…