Dubai (CNN) As Roger Federer prepares to defend his Australian Open title, an emotional interview with CNN Sport reveals just how much the Swiss continues to mourn the loss of Australian Peter Carter. Federer learned of Carter's death while competing at the Canadian Masters in Toronto and according to 'The Roger Federer Story: Quest for Perfection,' the book penned by Swiss tennis journalist Rene Stauffer, "he was never so upset in his life." JUST WATCHED Roger Federer on his first Wimbledon title in 2003 Replay More Videos ... MUST WATCH Roger Federer on his first Wimbledon title in 2003 01:09'Happy cry'The Federer household, which includes wife Mirka and their two set of twins, has coined the term "happy cry." Rafael Nadal (left) consoles Roger Federer after the Spaniard won the 2009 Australian Open. JUST WATCHED 18 reasons to love Roger Federer Replay More Videos ... MUST WATCH 18 reasons to love Roger Federer 02:02"It's hard to just say 'Yeah, no big deal.'

Source: CNN January 07, 2019 10:41 UTC