Novak Djokovic says surgery on his right knee went well after he was injured during the French Open. He also wrote in a post on social media on Thursday that he hopes to return to competition as soon as possible. Djokovic had an operation in Paris on Wednesday. That was two days after he hurt the knee early in the second set of a five-set victory against Francisco Cerundolo in the fourth round. The 24-time Grand Slam champion withdrew from the clay-court major tournament on Tuesday, so he was unable to play in the quarterfinals. Wimbledon begins on July 1.