Chargers quarterback Justin Herbert had a fantastic rookie season and Drew Brees made it clear recently that he has all the physical tools necessary to be a star in the NFL for a long time.

As Brees knows, however, physical tools are not the entire story. Quarterbacks have to master the mental game as well and that’s something that head coach Brandon Staley is focused on heading into this season.

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Staley noted that quarterbacks like Tom Brady and Aaron Rodgers have seen every kind of defense, played in every kind of situation and mastered finding weak spots in a defense.