Down here, it’s all about their own tennis yin and yang. One is a top 10-player who will do whatever he can to avoid controversy, while dedicating every ounce of his energy to the sport. The other is an unranked unicorn,

The 29-year-old’s Australian Open return was short-lived — and he warned it could be his last singles match in his homeland.

The tennis world has been at its most brutal after Nick Kyrgios’ straight sets loss at the Australian Open, reminding the Aussie that you have to walk the walk if you want to talk the talk.