Phillies relief pitcher Pat Neshek is on his sixth team in 11 years. He’s never had more than six saves in a season. But his baseball-card collection by most accounts leads the league—and could be Hall of Fame caliber.

The 36-year-old side-armer has parlayed some of his $24 million in career earnings into a card collection worth well into seven figures. It includes a Mickey Mantle 1951 rookie card now worth $200,000, and a Willie Mays rookie card from the same year valued at almost $60,000.

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