The fan who nabbed Topps' one-of-one Paul Skenes debut card decided he'd rather sell it at auction rather than take Bob Nutting up on his offer of watching Pittsburgh Pirates baseball.

All that this Los Angeles 11-year-old wanted for Christmas was an, admittedly expensive, box of baseball cards. Now, he’s a millionaire. In the more than $200 box of cards was a one-of-one ...