On this week’s episode of Beyond the Baseline, host Jon Wertheim talks with Washington Kastles owner, investor, entrepreneur and philanthropist, Mark Ein. As a longtime fan and player of the sport, Ein discusses how he was introduced to tennis as a child and how his experiences as a ballkid growing up have influenced some of … Continue reading Beyond the Baseline, with Jon Wertheim — Entrepreneur, philanthropist and tennis advocate Mark Ein →

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