Roger Federer is back in training following arthroscopic surgery on his knee.
The world No. 3 underwent the procedure three weeks ago to repair a torn meniscus. It does not usually require a long layoff, but it was still an unusual occurrence for the rarely-injured Federer.
The 17-time Grand Slam champion appears to have improved by leaps and bounds—quite literally, as he tweeted a picture of himself jumping with no visible bandage on his left knee.