Forecasts call for this to be a cool contest – but I’m talking about meteorologists, not sportscasters. The low for the day is predicted to be minus-6 degrees, which may be a stiff breeze indeed for the warm-weather Chargers. (The predicted high, though, is almost above freezing.) But Chargers QB Philip Rivers is enjoying his best season ever, and leads the league in completions. And even if he can’t throw, running back Ryan Mathews sure can run.