Earlier this year, in May, Stefanos Tsitsipas hired Novak Djokovic's former coach, Goran Ivanisevic, intending to touch the ceiling.

https://www.sportskeeda.com/tennis/news-stefanos-tsitsipas-mother-calls-goran-ivanisevic-blames-making-son-hire-djokovic-s-ex-coach

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