Lukas Lacko of Slovakia takes a drink during a break in his first round match against Novak Djokovic of Serbia at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 13, 2014.( (AP Photo/Aaron Favila)

Australian Open Tennis

Lukas Lacko of Slovakia takes a drink during a break in his first round match against Novak Djokovic of Serbia at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 13, 2014.( (AP Photo/Aaron Favila)

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