Serbian tennis player Novak Djokovic was forced to retire from his second-round match at the Cincinnati Open against Argentine Thiago Agustín Tirante. The match ended with a score of 6:2, 4:6, 4:6 in favor of the world No. 50, according to infohub.kz.

During the match, the Serbian athlete fell to his knees and required a medical timeout. The incident was captured on video and posted on social media by Tennis Channel.

In the third round of the Cincinnati tournament, Thiago Agustín Tirante will face 20-year-old Spanish player Martín Landaluce.

The Cincinnati Open runs from August 13 to 20. The total prize money for the men's singles competition is $9.4 million. The defending champion is Spain's Carlos Alcaraz.