Roger Federer is the idol of many players, having crossed several generations without ever losing his unmistakable elegance. The last two years have been very complicated for the Swiss phenomenon, who had to deal with a serious injury to his right knee.Suffice it to say that the King played just 13 official matches in 2021, collecting nine wins and four losses. After being eliminated in the quarter-finals at Wimbledon, the former world number 1 announced that he had suffered a knee relapse and had to undergo surgery for the third time in 18 months.The 20-time Grand Slam champion hopes to return in late su …