Roger Federer, who turns 39 next month, says he hopes to play again in front of crowds as he targets his comeback from a knee injury in 2021. He had another procedure on his right knee in June but hopes to return in 2021 even though he will turn 40 in August next year. “I want to come back healthy. We’ll see how long that lasts,” he told German weekly newspaper Die Zeit. The Swiss ace says he has missed tennis more than ever since the coronavirus pandemic first hit and forced a shutdown of the sport in March.