http://www.nytimes.com/2011/09/19/sports/tennis/djokovic-retires-in-pain-as-serbia-loses-davis-cup-semifinal.html?_r=1&adxnnl=1&adxnnlx=1316393617-msI9PEkJsagnUfX0ouAn2Q

http://www.dailymail.co.uk/sport/tennis/article-2038850/Rafael-Nadal-beats-Jo-Wilfried-Tsonga-Spain-Davis-Cup-Final.html

http://edition.cnn.com/2011/09/17/sport/tennis/tennis-davis-cup-semis/

http://www.dailymail.co.uk/sport/tennis/article-2038591/Great-Britain-promoted-Davis-Cup-Europe-Africa-Group-1-doubles-win.html

http://www.usatoday.com/sports/tennis/story/2011-09-16/davis-cup-semifinals/50433352/1

http://www.guardian.co.uk/sport/2011/sep/16/andy-murray-davis-cup

The biggest events of the season — let’s call it Novak Djokovic’s season — are…

http://straightsets.blogs.nytimes.com/2011/09/14/on-second-serves-stosur-was-no-1/

'Here we are a team and, what is more, I would not play if the…