India, Aug. 16 -- World No. 5 Novak Djokovic has revealed he is battling an ongoing, long-term health condition following a shock second-round exit at the 2026 Cincinnati Open against Argentina's Thiago Agustin Tirante on Saturday. The 24-time Grand Slam champion, competing in his first tournament fixture since Wimbledon, struggled heavily with extreme physical fatigue and oppressive heat in Ohio, raising major concerns ahead of the upcoming US Open.

Novak Djokovic falls to his knees during his R2 match in Cincinnati.

During the changeover, Novak appeared to be vomiting before receiving a medical timeout. #cincytennis pic.twitter.com/hHwxVQY5BB

- Tennis Channel (@TennisChannel) August 15, 2026

Cincinnati Open: Match Details

Match: No...