Novak Djokovic has urged tennis authorities to be cautious about moving put microphones near tennis coaches for live television, saying it could "endanger" players and their tactics during matches.

After dropping his opening set at the Australian Open to Nishesh Basavareddy, Noavk Djokovic eventually asserted himself for a victory to begin his bid for an 11th championship at Melbourne Park and a record 25th major title overall.