Terence Atmane, a 24-year-old tennis player ranked world No. 99, withdrew from his quarterfinal match at the **Jingshan Challenger** in China after the score was 5-5, 40-15 in favor of his opponent, 192nd-ranked Elias Ymer, in the third set. The ATP, the governing body of men's professional tennis, listed the reason for the withdrawal as a leg problem, but Atmane did not provide an explanation after the match, leading to criticism from observers. His sudden exit raised questions about the nature of his injury and the impact it might have on his career. Atmane had previously competed in China, where he reached the second round of the **Shanghai Masters 1000** three years ago while ranked 148th in the world. He no longer directly enters the ATP 500 tournaments in Beijing and Tokyo. According to Eurosport, Atmane has been undergoing medical examinations since after the US Open to determine the cause of his physical issues. The examinations revealed that he suffers from food allergies, including eggs and pineapples, and an "abnormally high CPK (creatine phosphokinase, a muscle enzyme) level," which could explain the accelerated deterioration of his muscles during prolonged efforts. Atmane's father told Eurosport that approximately 80% of the requested examinations have been completed, but no exact diagnosis has been found. Possible causes include a muscle disease, a vein dysfunction, or signs that Atmane may be reaching the end of his rope after a difficult season in which he played 38 matches, winning 16. A doctor also mentioned the possibility of a kidney problem. Atmane's father noted that if Atmane collapses again after two hours or two hours and 15 minutes of play in Shanghai, it could indicate a more serious issue. The situation has added pressure on Atmane as he prepares for the upcoming qualifiers, which are scheduled to start on Monday. His health remains a central concern for both his family and his supporters, who are hoping for clarity and a resolution to the medical mystery surrounding his condition.