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Australia Open day one saw the home favourite Thanasi Kokkinakis knock out 11th seed Ernest Gulbis ©AFP/Getty Images























Ana Ivanovic was one of eight women's seeds to fall on day one ©Getty Images























Maria Sharapova cruised through in straight sets ©Getty Images

Rafael Nadal, Roger Federer, and Andy Murray came through the first day unscathed ©Getty Images























Australia's Nick Kyrgios came through a hard fought five setter to secure his second round place ©AFP/Getty Images






















Canada's Eugenie Bouchard connects with a forehand in her first round match ©Getty Images






















Novak Djokovic began his quest for a fifth Australian Open title ©Getty Images























Rod Laver Arena played host to 2014 winner Stan Wawrinka's first match ©Getty Images























Spectators roar on Australian veteran Lleyton Hewitt ©Getty Images























Women's number one Serena Williams progressed in straight sets ©AFP/Getty Images