FILE PHOTO: Tennis - ATP Masters 1000 - Monte Carlo Masters - Monte-Carlo Country Club, Roquebrune-Cap-Martin, France - April 17, 2022 Greece's Stefanos Tsitsipas celebrates winning the final match against Spain's Alejandro Davidovich Fokina with his father Apostolos Tsitsipas REUTERS/Denis Balibouse/File Photo
(Reuters) - Greek Stefanos Tsitsipas has ended his collaboration with his father Apostolos as his coach, the former world number three said on Friday.
The 25-year-old, currently ranked 11th, had criticised Apostolos's coaching style after losing 6-4 6-4 to former Japanese world number four Kei Nishikori in the second round of the Canadian Open on Thursday.
