Tennis Days With Dave Gertler

It's been a fantastic Australian Open, and a very revealing grand slam in general. Along with the drama off and around the court, we've had some spectacular tennis, and some incredibly meaningful results. I'm joined by Pete Ziebron (@tennisacumen) to go over in great detail what we've learnt and what we've observed about Nick Kyrgios, Madison Keys, Stan Wawrinka, Vika Azarenka, Tomas Berdych and the Big Four.  We also make our finals predictions.