Mark Ein has two passions: sports and helping launch companies. We dig into both to discover how he created, invested in and bought several companies over the course of his 30-year career. Mark is one of the founding partners in the team that acquired the Washington Commanders NFL franchise. He founded Washington Kastles Tennis. And he’s executive chairman of Kastle Systems. Mark shares what entrepreneurial persistence really looks like (psst: think cold night sweats).
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