Melbourne, Jan 19 (UNI) Mentor Andre Agassi on Friday said that Novak Djokovic is 'physically extraordinary' to win the Australian Open by emulating Roger Federer in his first tournament for six months.
The Serb arrived in Australia with question marks over his elbow injury and has played two rounds in Melbourne wearing a compression sleeve on his serving arm.
The 12-times grand slam champion has re-modelled his serving action to take the pressure off the joint but it held up during a four-set win over Gael Monfils in brutal heat on Thursday.