2009 Australian Open – Men's singles final Open victory, Federer had not beaten Nadal in a Grand Slam since the 2007 Wimbledon final and many analysts pointed to the 2009 Australian Open final as the match which severely compromised Federer's belief that he could win against Nadal in a major. Mats Wilander proposed that Federer had developed a mental block while playing against Nadal and that their rivalry had become one-sided and predictable after this match. Tennis Channel commentator Justin Gimelstob referred to Federer's loss as a type of 'collateral damage' in which Federer not only lost a tennis match but also lost his last remaining stronghold
2015 Australian Open 2015 Australian Open The 2015 Australian Open was a tennis tournament that took place at Melbourne Park from 19 January to 1 February 2015. It was the 103rd edition of the Australian Open, and the first Grand Slam tournament of the year. Stan Wawrinka was the defending champion in men's singles but lost to four-time Australian Open champion Novak Djokovic in the semi-finals. Reigning women's champion Li Na did not defend her title, as she retired from professional tennis in September, 2014. Novak Djokovic won an Open Era record fifth men's singles crown by defeating Andy Murray in the final,