Seven weeks after tearing his meniscus so badly he needed surgery and pulled out of his quarterfinal at the French Open, Novak Djokovic suffered more knee problems on Court Philippe-Chatrier at Roland Garros, this time during his quarterfinal match against Stefanos Tsitsipas at the 2024 Paris Olympics.

Djokovic took medication and had the help of adrenaline (and, it appeared, a hefty dose of psychological scarring for the Greek) to get him through the match, escaping deficits of 4-0 and 5-3, 40-0 in the second set to win 6-3, 7-5 and keep his hopes of an elusive gold medal alive, but it came at a price.

How steep that price is won’t be known until Djokovic undergoes further tests ahead of his semifinal match, which is scheduled for Friday evening against Italy’s Lorenzo Musetti, but he sounded seriously worried following the win over Tsitsipas.

“I’m concerned about the state of the knee. I cannot give you exact information because I don’t have it,” he said.

“I have to go and examine the knee now with my physio and with the medical staff of the tournament and then let’s see, I’m playing at seven tomorrow which gives me slightly more time, but I’m hoping I can be ready.”