Martina Navratilova previews the 2017 Australian Open Beyond The Baseline: SI's Tennis Podcast with Jon Wertheim

On this week's episode, host Jon Wertheim talks with Martina Navratilova about the current state of men's and women's tennis, her takeaways from the lead-up tournaments, the recent coaching changes and more. Navratilova also discusses Serena Williams's momentum and preparation heading into Melbourne, the aging and maturation of players during their careers and more.
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