Novak Djokovic is through to the last-16 at the Australian Open tennis.
The 24-time Grand Slam winner eased to a straight sets win against Tomas Machac in Melbourne.
Carlos Alcaraz advanced to round-four after a three sets to one victory over Nuno Borges.
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Defending women's champion Aryna Sabalenka and third seed Coco Gauff are both through.
Earlier, two-time champion Naomi Osaka was forced to retire due to injury during her third round clash with Belinda Bencic.
