Steady as He Goes: Roger Federer on Success, Staying Power and 20 Years at the French Open - The New York Times
Why does Rafael Nadal not get the same hype as Roger Federer or Novak Djokovic? - Quora
Roger Federer withdraws from French Open over knee concerns
Roger Federer withdraws from French Open over knee concerns
Top Stars in Tennis Choose Rest Ahead of the U.S. Open - The New
Novak Djokovic - Wikipedia
Roger Federer chooses rest, withdraws from French Open - The Hindu
Injured Rafael Nadal Withdraws From the French Open - The New York
Roger Federer's return at French Open has greatest implications - Los Angeles Times