Stefanos Tsitsipas

After a defeat in Montreal in 2024, Tsitsipas publicly criticised his father and coach Apostolos before announcing the end of their collaboration, subsequently acknowledging that he had been wrong to speak to him in that manner. After a brief period working with others, including Goran Ivanisevic, he brought his father back as coach in July 2025.

State of the evidence

Documented

Attribution

Directly implicated

Following his five-set defeat to Daniel Altmaier at the US Open, Tsitsipas criticised the German for using several underarm serves. At the net, he told him in substance not to be surprised if he aimed at him next time, prompting boos from part of the crowd.

State of the evidence

Documented

Attribution

Directly implicated

Comments recorded for Netflix's Break Point series, in which Tsitsipas described Kyrgios's approach as 'uneducated' and referred to an 'NBA basketball attitude', were widely perceived as racially coded when broadcast. Tsitsipas issued a lengthy statement maintaining that his words had been misinterpreted.

State of the evidence

Documented

Attribution

Personally implicated

Frequent interventions by his father Apostolos from the player's box prompted opponents' complaints and several coaching warnings during Tsitsipas's career. At the 2022 Australian Open, Daniil Medvedev angrily challenged the umpire, accusing Apostolos of coaching on every point; at the ATP Finals, an argument in the family box accompanied another frustrated outburst by Tsitsipas.

State of the evidence

Documented

Facing Kyrgios in Wimbledon's third round, Tsitsipas struck a ball into the crowd after a set, then reacted to an underarm serve by angrily hitting another ball. He received two code violations, including a point penalty, and was subsequently fined $10,000 for unsportsmanlike conduct. He also repeatedly attempted to hit Kyrgios at the net.

State of the evidence

Documented

Attribution

Directly implicated

Tsitsipas reposted a text criticising feminism and wrote that 'modern feminism' had shifted from gender equality to a 'cult of outrage' seeking to disparage men. The message triggered a strong reaction within the tennis community.

State of the evidence

Reported by the press

Attribution

Personally implicated

Tsitsipas said he was not vaccinated against COVID-19 and would do so only if it became mandatory to compete. He subsequently expressed reservations about vaccinating younger people and side effects, prompting a response from the Greek government, which criticised him for speaking outside his expertise.

State of the evidence

Documented

Attribution

Personally implicated

During his five-set match against Andy Murray at the US Open, Tsitsipas took a medical timeout and then a toilet break lasting approximately seven minutes before the fifth set. Murray considered that the interruptions had affected his body and said he had lost respect for him. The controversy spread to other matches and debate over break rules.

State of the evidence

Documented

Attribution

Directly implicated

After losing a tie-break against Nick Kyrgios at the ATP Cup, Tsitsipas angrily struck his racket near the bench and accidentally hit his father and coach Apostolos on the arm, leaving a mark. He received a warning and then a penalty point following another act of frustration.

State of the evidence

Admitted by the person

Attribution

Directly implicated