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

Novak Djokovic battles back to beat Roger Federer in U.S. Open semifinals, will face Rafael Nadal – New York Daily News

2011 US Open – Men's singles - Wikipedia

Lago Titicaca Selezionare Rifiuto 2011 us open tennis winner Seminario impicciarsi Voltaggio

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

US Open 2015: Novak Djokovic beats Roger Federer in final to claim tenth major title – talkSPORT

2011 U.S. Open: Federer Is Set to Battle Djokovic in Semifinals - The New York Times

Sport, Us/sport

Roger Federer beats Novak Djokovic in Dubai Championship semi-finals - ABC News

Is Roger Federer the sorest loser in the history of tennis? - Quora

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

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