Roger Federer, Rafael Nadal, and Jo-Wilfried Tsonga cruised, but the best match of the day came from Donald Young and Andreas Seppi.
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The 2008 champion refused to fold against world No. 72 Karin Knapp, who threw everything in her arsenal at her.
Two of the leading Americans solved the heat smoothly, while Gasquet survived until he thrived.
Serena Williams and Angelique Kerber impressed on Wednesday, while Sabine Lisicki fell short.
Two top-10 men joined the American No. 2 among those who flourished in the Australian Open heat.
Lleyton Hewitt, Juan Martin Del Potro, Jerzy Janowicz, and several young stars feature in this countdown.
Can Nikolay Davydenko and Sam Querrey derail the smooth Gasquet and the explosive Gulbis?
Opportunity knocks for the Canadian phenom and the top Aussie hope, but will they answer?
Young stars such as Nick Kyrgios and Rhyne Williams flourished, while Lleyton Hewitt and Andreas Seppi played a five-set thriller.
Caroline Wozniacki and Simona Halep cruised, while Victoria Azarenka and Agnieszka Radwanska needed to battle.
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