US Open 2011: Roger Federer struggles to accept Novak Djokovic

Roger Federer was left stung by Novak Djokovic's comeback in their five-set US Open semi-final

U.S. Open 2015: Novak Djokovic beats Roger Federer for 10th major

Novak Djokovic: 'Beating Roger Federer in 2011 is my best US Open memory

Roger Federer vs Novak Djokovic: Best of all time vs best of this time

The Shot, 10 Years Later. “That miracle forehand…does that change…, by Juan José Vallejo

5 instances when Novak Djokovic beat Roger Federer and Rafael Nadal in the same tournament

Djokovic Win Over Federer Sets Up Historic Clash With Nadal in Roland Garros Finals – Long Island Tennis Magazine

Novak Djokovic - Wikiwand

Which are the most devastating losses in careers of Federer, Nadal and Djokovic? - Quora

นอวาก จอกอวิช - วิกิพีเดีย

Roger Federer vs. Novak Djokovic: A Rivalry That Sizzles in the Paris Sun, News, Scores, Highlights, Stats, and Rumors

Sport, Us/sport

Where does Djokovic stand in all-time Grand Slam list with Nadal, Federer?

No. 1 Novak Djokovic, No. 2 Roger Federer easily reach U.S. Open final - CBS News

Who do you think is the worst behaved player ever in tennis, Williams, Kyrgios, McEnroe, Connors or someone else? - Quora

Novak Djokovic vs Roger Federer head to head at the US Open 2015 - Sports Illustrated