Roger Federer has said that he feels "totally relaxed" after easing his way into the fourth round at the French Open earlier.
The world number three beat Julien Benneteau in straight sets to set up a clash with Gilles Simon in the next round.
Speaking after the match, the 2009 Roland Garros champion said: "I'm happy because I have not used much of my energy so far. I think I can go deep in the tournament.
"I feel totally relaxed. Mentally I'm okay. I'm quite confident. I can feel it, which is what you need if you want good results at Roland Garros."
Federer is yet to drop a set at this year's tournament.
