Australian Open - Day 1

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Novak Djokovic of Serbia serves in his first round match against... News PhotoAustralia,Australian Tennis Open,Day,Grand Slam,Lukas Lacko,Match - Sport,Melbourne - Australia,Novak Djokovic,Round One,Serbia,Serving - Sport,Slovakia,Sport,Taking a Shot - Sport,Tennis,VerticalPhotographer Collection: Getty Images Sport 2014 Getty ImagesMELBOURNE, AUSTRALIA - JANUARY 13: Novak Djokovic of Serbia serves in his first round match against Lukas Lacko of Slovakia during day one of the 2014 Australian Open at Melbourne Park on January 13, 2014 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images)