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Story summary
- San Francisco 49ers running back Christian McCaffrey is expected to play against the Tennessee Titans despite a back issue.
- NFL insiders say he is "good to go" for the game.
- This season, McCaffrey has led the 49ers with 849 rushing yards and 806 receiving yards.
- His health is vital as the 49ers pursue a playoff berth.
- If McCaffrey cannot play, Brian Robinson Jr. would take over as the lead back.
