Maria Sharapova toiled in 43-degree Celsius (109 F) temperatures for more than 3 1/2 hours on Rod Laver Arena and could count herself among the unlucky early starters at the oppressively hot Australian Open on Thursday. After organizers finally decided to suspend matches due to extreme temperatures in a heat wave gripping southeastern Australia, late lighting and rain caused further delays on day four. Caroline Wozniacki highlighted the unpredictable Melbourne weather, describing the conditions as ''pleasant'' when she played on Rod Laver Arena immediately after Sharapova. Rafael Nadal and Roger Federer also enjoyed the milder temperatures when they played evening matches indoors. More...