Jack Sock on offseason, format changes, more Beyond The Baseline: SI's Tennis Podcast with Jon Wertheim

On this week's episode, host Jon Wertheim talks with World No. 23 Jack Sock about his 2016 season, the status of his doubles game, format changes in tennis and the “Next Gen” ATP players. Sock also talks about why he is a sports fan, his 2017 goals, presidential politics in the tennis locker room and more.
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