Federer backs Sharapova doping ban | The Guardian Nigeria News - Nigeria and World News — Sport — The Guardian Nigeria News – Nigeria and World News
Roger Federer frustrated by tennis' anti-doping programme – The Irish Times
Back From a Knee Injury, Federer Tries to Catch Up - The New York Times
Roger Federer News and Articles | Salon.com
Tennis: Dopage: Federer a été l'un des plus contrôlés en 2019 - Le Matin
Roger Federer is retiring from tennis -- but his mark on the sport is indelible
Roger Federer: World No 1 had more than 14 anti-doping tests in 2017 | Tennis | Sport | Express.co.uk
Roger Federer: We can do more to stop doping
Dopage: Roger Federer veut plus de contrôles dans le tennis - L'Express
Roger Federer explains how inconsistent drug testing can be at times
Tennis on the right track in anti-doping fight - Federer
Federer: 'Naive to think tennis is clean' | CNN
Roger Federer was tested for doping 29 times in 2019
The Tennis Purist: The Curious Case of Roger Federer
Roger Federer, Rafael Nadal weigh in on Viktor Troicki's doping ban - Sports Illustrated
Rafael Nadal and Roger Federer accused of doping by young tennis player
Roger Federer wants doping crackdown in wake of Maria Sharapova failing test | Roger Federer | The Guardian
Roger Federer concerned about demands of tennis tour
Roger Federer announces retirement from tennis
Wimbledon: Serena Williams asks for fair treatment over doping tests, Federer seconds
Federer Sneaks Past Evans Into 3rd Round at Australian Open - Perfect Tennis
Roger Federer demands more regular drug testing in tennis and greater investment in anti-doping
