College football will crown a national champion Monday night and could also deliver perhaps the greatest underdog story in American team sports history, a tale that would forever live in gambling lore.
No. 3 TCU has already defied the odds, literally, reaching the title game after an offseason that saw futures as high as 500-1 but with 200-1 being the consensus number. No eventual champion in any sport has ever capped off such a surprise.
In…