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Caroline Wozniacki of Denmark hits a forehand return to Christina McHale of the U.S. during their second round match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014.
MELBOURNE, Australia—Former No. 1-ranked Caroline Wozniacki has advanced to the third round of the Australian Open in the relatively comfortable confines of a roof-covered Rod Laver Arena, beating American Christina McHale 6-0, 1-6, 6-2 Thursday.

Tenth-seeded Wozniacki was most definitely the beneficiary of the schedule. The first match at Rod Laver Arena—Maria Sharapova's 3 hour, 28-minute, three-set win over Karin Knapp—was played with the roof open and in temperatures that reached 42 Celsius (108 Fahrenheit).

But the tournament's Extreme Heat Policy was in effect by the time the Wozniacki match—second on the day on Rod Laver—started. That allowed the Danish player to complete her match in conditions not much warmer than room temperature.


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