Serena Williams reached the third round of the Australian Open with a straight-sets win over Russia’s Vera Zvonareva.
The American top seed, 33, came through a tight first set to win 7-5 6-0 as the temperature reached 33C in Melbourne.
Two-time champion Victoria Azarenka defeated eighth seed Caroline Wozniacki 6-4 6-2.
Men’s top seed Novak Djokovic thrashed Andrey Kuznetsov 6-0 6-1 6-4 and defending champion Stan Wawrinka beat Marius Copil 7-6 (7-4) 7-6 (7-4) 6-3.
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