Chargers Philip Rivers watched Friday's team practice from the sideline. — Nelvin C. Cepeda / San Diego Union-Tribune / Twitter @NelCepeda
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Observations from a light Chargers scrimmage, Saturday at Qualcomm Stadium:
Philip Rivers made the difficult look easy, moving the chains on third-and-7 with a pass to Keenan Allen, who was perhaps the quarterback's third option.