Stefanos Tsitsipas revealed he seriously considered retiring from tennis in 2025 due to severe back pain, particularly after a US Open loss where he couldn't walk for two days. The 27-year-old, now ranked 36th, is preparing for the 2026 United Cup, expressing excitement about his ongoing medical treatment and completing off-season training pain-free. His primary goal is to finish matches without pain and return to his previous form.