Stefanos Tsitsipas has brought his father Apostolos back as coach after ending his brief partnership with Goran Ivanisevic, the former world number three said. Tsitsipas, 26, ended his collaboration with Ivanisevic, who helped Novak Djokovic claim nine of his 24 Grand Slam titles, last week after less than two months. Tsitsipas, the 2021 French Open and 2023 Australian Open runner-up, has tumbled to 30th in the world rankings and has failed to get beyond the second round in the first three