As Danielle Collins walks out to Rod Laver Arena on Saturday night (local time), you may hear a few boos from the Australian ...

When the crowd booed American tennis player Danielle Collins at the Australian Open, she heckled them right back.

Read what Novak Djokovic had to say about Danielle Collins' controversial action and remarks after her Australian Open ...

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Djokovic, who knows what it's like to be a tennis villain, supported the American getting the last word on a hostile Australian Open crowd.

Djokovic gets into back-and-forths with hecklers at his matches, including Friday night at Rod Laver Arena. So often ...