Roger Federer retires as a true GOAT: Check out all his big achievements - IN PICS

Federer is the only male player in tennis history to win 6 Grand Slam titles in two years (2006–07), 8 in three years (2004–06, 2005–07), 11 in four years (2004–07), 12 in five years (2003–07, 2004–08), 14 in six years (2004–09), 15 in seven years (2003–09) and 16 in eight years (2003–10). 11 Grand Slam titles in four years is an all-time record, men's or women's. (Image source: Twitter)

Roger Federer has achieved many feats and one of the biggest ones is winning the Us Open fve consecutive times. From 2004 to 2008, there was no on in men's tennios who could beat Federer. He was just class apart. (Image source: Twitter)

Federer was the among the men's players to reach the landmark of 20 Grand Slam titles. He made it possible with won in Australian Open in 2018 after a year of battling injuries. After he touched 20, his biggest rivals Novak Djokovic and Rafael Nadal went past him. (Image source: Twitter)

Yes, Roger Federer has made it to 31 Grand Slam finals, winning 20 of them. Add to that 46 semifinal appearances, and 58 quarterfinal appearances. He is one of 8 men to have won a career Grand Slam (winning all four Grand Slams at least once).  (Image source: Twitter)

Federer is the only player to register at least ten titles on clay, grass and hard courts; he has 71 hard court titles, 19 grass court titles, and 11 clay court titles. (Image source: Twitter)