About: http://webisa.webdatacommons.org/451226810

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Only really Del Potro is a threat to him before the semi-finals on this surface, assuming Federer is on his game.he is a good point about Federer's 2011 break, I would forgotten about that.
http://www.w3.org/ns/prov#wasQuotedFrom	murraysworld.com