Seven-time Wimbledon champion Roger Federer says he is healthy again and looking forward to the grass-court season.

Federer is still without a title this year and has been battling injuries. He underwent meniscus surgery after losing the Australian Open final to Novak Djokovic and then missed the French Open because of a back injury. The top-ranked Djokovic won his first French Open title on Sunday to complete a career Grand Slam.

Federer says he has had no setbacks in the last three weeks, and "now I am feeling really well."

The 17-time Grand Slam champion is the top-seeded player in the inaugural edition of the Mercedes Cup on grass and has a bye into the second round.

Federer says Djokovic's win in Paris was "super for tennis, world class."