NFL Insider’s cunning theory on reason behind Christian McCaffrey’s mystery ‘tightness’

Christian McCaffrey’s mysterious “tightness” has kept him off the San Francisco 49ers practice field for more than a week. Now, one NFL insider is wondering whether the issue might involve more than health. Pro Football Talk’s Mike Florio reported Monday that McCaffrey’s reduced practice workload could amount to a “hold-in” as he seeks an adjustment...