US
The two close friends have won 2008 Olympic gold and 2014 Davis Cup gold together
34-year-old has a 23-3 losing head-to-head record against close friend and fellow Swiss superstar
Both Swiss stars won Olympic doubles gold in 2008 and a Davis Cup title in 2014
Swiss fifth seed slumped to another surprise defeat by an outsider, after losing in the Australian Open second round
The 35-year-old beats his Swiss compatriot 6-4, 7-5 to become oldest ATP player to win one of elite Masters title
Third seed romped past Philipp Kohlschreiber 7-5 6-3 to set up meeting with Japan’s Nishioka
Swiss maestro ousts compatriot Wawrinka in classic five-setter
Believes Murray, Djokovic have made it almost impossible for him to achieve feat
Serb begins his bid to hold on to his number one ranking with an easy win over Gilles Muller
Australian power-hitter fires 25 aces to claim the title