Novak Djokovic's most successful spell as a tennis player came under the guidance of Croatian former tennis player Goran Ivanisevic. The former World No.

Goran Ivanisevic joined Stefanos Tsitsipas‘ team after the Roland Garros, where the latter succumbed to a four-set defeat in the second round against Matteo Gigante.

Tennis world has seen shocking wins in all four grand slams over the years which has also paved way for new stars. Take a ...