Djokovic, Gulbis would argue, always punch each other: Georgescu

Former Romanian tennis player Cosmin Georgescu said Novak Djokovic and Latvian tennis player Ernests Gulbis used to break racquets, argue and "always" punch each other. Georgescu termed the two players as ambitious, proud and determined. "When they were both on the field, no one could take them off until after six to eight hours of training," he stated.