Against an opponent still on the comeback trail after surgery on his right shoulder, the 24-year-old Tsitsipas jumped to a 4-1 lead in the opening set but saw the world number 152 Coric turn the tables for a 7-6(0) 6-2 victory. Asked if he knew what made the difference after his brisk start, Tsitsipas said: "I'm not in any condition to answer this question, because I'm still looking for the answer myself. "I don't have a clear answer for that." Tsitsipas, the 2021 French Open runner-up, has a tour-leading 19 Masters 1000 wins this season, winning titles in Monte Carlo and Mallorca, and reaching the finals in Rotterdam and Rome.