Roger Federer
Switzerland's Roger Federer reacts during a news conference after losing his semi-final match against Serbia's Novak Djokovic at the Australian Open tennis tournament at Melbourne Park, Australia, January 28, 2016. Reuters/Issei Kato

Roger Federer is back practicing tennis after successfully undergoing a knee surgery that repaired a torn left meniscus.

Federer posted a picture of himself on Twitter during training sessions, showing that the Swiss Maestro is healthier than anyone could have imagined. The 17-time Grand Slam winner captioned in one of his photos that he was very happy to back at it.

Federer suffered a knee injury a day after losing to world No. 1 Novak Djokovic in the semifinal round of the Australian Open. He has been forced out of two tournaments leading up to Roland Garros in Paris, the Rotterdam and the Dubai Tennis Championships, where he was supposed to defend his title against the Serb. With Federer out in Dubai, Djokovic has a chance to claim a fifth title at the tournament, but the Serb was not happy his career rival was not around to compete against him in UAE.

"I hope he recovers fast, because we are not used to seeing him injured," Djokovic said, reports Sports360. “He's very fit, and he plays very well throughout the entire year

The Swiss is expected miss six to eight weeks of tennis action, but could return to the Indian Wells in California, according to a schedule released on his official website.

However, with less competitive matches leading up to the French Open, there are concerns about Federer’s ability to add one more Grand Slam win to his all-time record. But in a report earlier this month by ESPN tennis analyst Peter Bodo, Federer could still be in top shape when he plays on the clay court in Paris.

“Trouble is, Federer has already decided to skip that [European clay court circuit in April] segment in its entirety until the grand finale at Roland Garros,” Bodo wrote. “…Yet Federer will probably be in surprisingly good shape even if he doesn't hit a ball in competition until Roland Garros.”