Stefanos Tsitsipas revealed his relationship with dad Apostolos suffered during their player-coach partnership.
British number one Jack Draper produced a stunning fightback to beat world number 11 Stefanos Tsitsipas and reach the third round at the Cincinnati Open in Ohio.
Casper Ruud broke Stefanos Tsitsipas' winning streak at the Barcelona Open when he won the final in straight sets on Sunday.
Stefanos Tsitsipas maintained his unbeaten record on clay this season to set up a final rematch against Casper Ruud at the Barcelona Open.
In an ominous sign for his rivals, Novak Djokovic appeared to find his form in a straightforward win over Tomas Martin Etcheverry at the Australian Open.
Injury woes continued for Matteo Berrettini as he dropped out of the Australian Open without playing a match.