Novak Djokovic a doubt for Roland Garros Quarter-Finals due to ongoing knee problem

Novak Djokovic may not get revenge on Casper Ruud for the Monte-Carlo Masters after all with the World No.1 who suffered with a knee problem throughout his heroic win over Francisco Cerundolo admitting it could yet spell the end of his tournament.

Djokovic defeated Cerundolo 6-1, 5-7, 3-6, 7-5, 6-3 coming from 2-1 down in the deciding set to seal the win and he said afterwards that he has had an issue for a number of weeks which he said he slipped on during his win.

He said that he was in some pain and isn't sure if he will play on Wednesday as a result. Of course given it is a Grand Slam, he is more likely to push through but it is still a real cause for concern for the 24-time Grand Slam champion. He now faces his opponent from last year's final and also like alluded to Monte-Carlo where Ruud got one over him.

“I have had a minor knee problem for a few weeks , but it is not a big deal. Then I slipped in the second set and I felt pain," said Djokovic.

"I took a lot of painkillers and they started to take effect at the end of the fourth. I don't know if I will play in the quarterfinals , we will wait and see.”

"I started feeling the pain [in set two] and asked for the physio treatment and the medical timeout and tried to take care of it," he said on court. "It did disrupt me definitely in play. For two sets, two sets and a half, I didn't want to stay in the rally too long. Every time he would make sudden drop shots or change directions, I would not be feeling comfortable to do the running.

"At one point I didn't know, to be honest, whether I should continue or not with what's happening."