I couldn’t believe my eyes. There had to be a mistake. A poster hung in the sports book at this local casino congratulating the winner of its NFL pick ’em contest, in which patrons paid $25 to select games each week of the regular season with no point spread. Winners could pocket up to $30,000 each week, or six figures for the overall winner at the end of the year. The champ wasn’t someone I expected — it was an elderly woman, someone who is usually stationed at the penny slot machines at the casino, not a handicapping specialist cashing ...