Roger Federer fighting to be fit for French Open

"Clearly, the way I'm playing right now is never going to be enough for any good run in Paris, and then I also wouldn't play this way."

Roger Federer's record streak of 65 consecutive grand slam appearances could be at risk with the world number two struggling to overcome a back problem ahead of the French Open.

After pulling out of last week's Madrid Open, Federer decided to play in Rome but was clearly not 100 per cent in a 7-6 (7/2) 6-4 loss to Dominic Thiem in the third round.