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Rickey Henderson: Steals champ and cards champ

Why did Reggie Jackson give Rickey Henderson $1,000 for All-Star Game tickets in 1991?

This is a great question, and one that probably ends with the money not being for tickets. The back of the check, signed by Henderson states: "I am the best card player."

These six words turn what could've been a $600 item into one that has already exceeded $15,000. Darren Rovell and Will Stern predict how high they think it could go.

Read their full auction preview here.