San Francisco 49ers running back Christian McCaffrey is set to miss practice for a couple of weeks due to a calf injury. Head coach Kyle Shanahan has indicated that the injury is not long-term, and McCaffrey will not participate in the preseason games. This news raises questions about his readiness for the regular season.

• McCaffrey's absence from practice could impact his preparation for the upcoming season.
• Shanahan's reassurance about the injury being short-term is a positive sign for fantasy managers.