Erratic title contender Coco Gauff battled into the Australian Open second round Monday ahead of a defiant Novak Djokovic launching his latest bid to win a record 25th Grand Slam crown at Melbourne Park.

A bumper second day at the season-opening Grand Slam also sees six-time major winner Iga Swiatek and three-time Australian finalist Daniil Medvedev in action.

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