Title favourites Novak Djokovic and Serena Williams shrugged off a second day of intense heat to reach the Australian Open third round Wednesday alongside China's Li Na. Djokovic, watched by new coach Boris Becker, flew past against Argentina's Leonardo Mayer 6-0, 6-4, 6-4, extending his Melbourne streak to 23 straight wins. Williams also took the fast route with a 63-minute demolition of Serbia's Vesna Dolonc as temperatures hovered near 40 Celsius (104 Fahrenheit). "It was tough conditions out there. I think it keeps getting hotter. Every day is really hot," said the 17-time...
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