Roger Federer 'stopped believing' ahead of retirement as knee injury took toll
Roger Federer injury doubt for US Open after pulling out of warm-up events | Evening Standard
Rio 2016: Federer to miss Olympics, rest of season with injury - ABC News
Roger Federer looked into ways to play either Rio Olympics or US Open | Sports News,The Indian Express
Roger Federer provides injury update ahead of potential Novak Djokovic semi-final | Tennis | Sport | Express.co.uk
Roger Federer Will Miss at Least Two Tournaments With Knee Injury - The New York Times
Back From a Knee Injury, Federer Tries to Catch Up - The New York Times
I was upset about the pain' - Roger Federer lifts the lid on the injury he sustained at Australian Open - Tennis365
Federer injury update casts major doubt on Laver Cup participation
Wimbledon: Roger Federer Nervous Over Injury on Court | Tennis News
Roger Federer pulls out of Tokyo Olympic Games due to knee injury | Tennis News | Sky Sports
Roger Federer Won't Play in 2020 After Knee Surgery - The New York Times
Roger Federer ready for 'unique' new year after six-month injury layoff | Roger Federer | The Guardian
Roger Federer still has “burning” desire to return as agent gives injury comeback update - Mirror Online
Roger Federer out for Olympics, done for year with injury | The Star
Roger Federer injury scare as Australian Open star requires treatment in quarter-final tie | Tennis | Sport | Express.co.uk
Roger Federer set for tennis return in September following injury | The Independent
Roger Federer on Twitter: "https://t.co/VVGI1o8XYZ" / Twitter
Roger Federer Says He Won't Play Tennis Until 2021 Because Of A Knee Injury
Nadal advances, Federer, Osaka withdraw from Italian Open due to injuries | CBC Sports
Roger Federer: 14-year streak comes to an end | CNN
Roger Federer and the End of Athlete's Knee
