Federer to assess further participation at Roland Garros

Federer, who faces Matteo Berrettini for a place in the quarter-finals where he could potentially meet world number one Novak Djokovic, said he would have liked to know he is at his best like Djokovic or holder Rafa Nadal.

Roger Federer has said he will assess his further participation in the ongoing French Open after a gruelling 7-6(5) 6-7(3) 7-6(4) 7-5 win over Germany's Dominik Koepfer on an empty Court Philippe Chatrier in Saturday's night match.