Roger Federer demands more regular drug testing in tennis and greater investment in anti-doping
Roger Federer still surprised at lack of doping tests
Roger Federer Enters BNP Paribas Open with No. 1 World Ranking
Roger Federer, Rafael Nadal weigh in on Viktor Troicki's doping ban - Sports Illustrated
Roger Federer frustrated by tennis' anti-doping programme – The Irish Times
Tennis: Dopage: Federer a été l'un des plus contrôlés en 2019 - Le Matin
Federer backs Sharapova doping ban | The Guardian Nigeria News - Nigeria and World News — Sport — The Guardian Nigeria News – Nigeria and World News
Roger Federer announces retirement from tennis
Roger Federer: We can do more to stop doping
Roger Federer Calls for Greater Anti-Doping Investment in Tennis
Rafael Nadal and Roger Federer accused of doping by young tennis player
The Tennis Purist: The Curious Case of Roger Federer
Sharapova fiasco: Roger Federer roots for consistent global dope testing
Federer wants more doping tests in tennis | Tennis News – India TV
Back From a Knee Injury, Federer Tries to Catch Up - The New York Times
Serena Williams takes on Roger Federer in legendary mixed doubles clash
Roger Federer - Wikipedia
Federer will have better idea about injury return in April/May | Reuters
Roger Federer is retiring from tennis -- but his mark on the sport is indelible
:focal(1751x406:1753x404)/origin-imgresizer.eurosport.com/2015/11/05/1726862-36535605-2560-1440.jpg "Why tennis should listen to Roger Federer's request for more anti-doping tests - Eurosport")
Why tennis should listen to Roger Federer's request for more anti-doping tests - Eurosport
Wimbledon: Serena Williams asks for fair treatment over doping tests, Federer seconds
Federer Sneaks Past Evans Into 3rd Round at Australian Open - Perfect Tennis
