Roger Federer, Andy Murray want more money spent on tennis anti-doping measures | India.com
Novak Djokovic slams tennis' anti-doping procedures | South China Morning Post
I'm proud to have played with Roger Federer', says ATP ace
Roger Federer wants doping crackdown in wake of Maria Sharapova failing test | Roger Federer | The Guardian
Roger Federer - Wikipedia
Shocked Federer breaks silence on Sharapova doping scandal
Roger Federer, Rafael Nadal weigh in on Viktor Troicki's doping ban - Sports Illustrated
Roger Federer 'feels two ways' about Olympics - Tennis
Roger Federer still surprised at lack of doping tests
Roger Federer wants more drug testing in tennis - BBC Sport
ATP World Tour Finals: Roger Federer wants tennis to conduct more drug tests | Tennis News | Sky Sports
Roger Federer leads calls for biological passports to catch drug cheats | Drugs in sport | The Guardian
Roger Federer: World No 1 had more than 14 anti-doping tests in 2017 | Tennis | Sport | Express.co.uk
Serena Williams and Roger Federer voice frustrations with tennis doping tests - YouTube
Djokovic joins Nadal, Federer, Murray for Team Europe at Laver Cup | Reuters
Federer wants more doping tests in tennis - SWI swissinfo.ch
Roger Federer explains how inconsistent drug testing can be at times
The Tennis Purist: The Curious Case of Roger Federer
Sharapova fiasco: Roger Federer roots for consistent global dope testing
Federer backs Sharapova doping ban | The Guardian Nigeria News - Nigeria and World News — Sport — The Guardian Nigeria News – Nigeria and World News
Federer wants more doping tests in tennis | Sports | Jamaica Gleaner
Tennis on the right track in anti-doping fight - Federer
Federer calls for more frequent doping tests - Sportsnet.ca
The Tennis Purist: The Curious Case of Roger Federer
Roger Federer was tested for doping 29 times in 2019
