Francisco Cerundolo

PARIS - Serbian tennis player Novak Djokovic underwent a knee operation in Paris on Wednesday morning, the Italian sports daily Gazzetta dello Sport reports.

After suffering a meniscus injury in his right knee during a Roland Garros match against Argentine Francisco Cerundolo, Djokovic on Tuesday decided to withdraw from the tournament.

PARIS - Serbia's Novak Djokovic, the world number one in men's tennis singles, is through to the Roland Garros fourth round after coming from behind to beat Italian Lorenzo Musetti 7-5, 6-7 (6-8), 2-6, 6-3, 6-0 in a night-time thriller.

Djokovic, who won after four and a half hours of play, is now 5-1 head-to-head against Musetti.

RIO DE JANEIRO - Serbian tennis player Dusan Lajovic is through to the quarter-finals of the Rio de Janeiro ATP tournament after a 6-2, 7-5 victory over compatriot Laslo Djere.

World number 58 Lajovic, who won after an hour and 50 minutes of play, is now 3-2 head-to-head against Djere, who is 35th in the ATP rankings.

BUENOS AIRES - Serbian tennis player Dusan Lajovic is through to the quarter-finals of the Buenos Aires ATP tournament after a 6-4, 1-6, 6-1 victory over Chilean Alejandro Tabilo on Wednesday.

Lajovic, who won after 96 minutes of play, will next face the winner of the all-Argentine tie between Facundo Diaz Acosta and Francisco Cerundolo.