How NFL team ratings could save your bets against volatility

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The Jets' Sam DarnoldIt’s clear from studying estimated “market” power ratings in the NFL that the composite intelligence driving point spreads is having a heck of a time tracking erratic teams.

Some examples:

— The New York Jets recently covered three straight games by double digits, seemingly establishing an ability to dominate bad opponents. Then, last week, a disaster against previously winless Cincinnati that missed the market 18¹/\u2082 points in the other direction.

— Their opponent Sunday, the Miami Dolphins (1 p.m., CBS), have been more erratic for longer. Miami has recent outright victories as double-digit ’dogs over Philadelphia and Indianapolis. The Dolphins also have…