San Francisco 49ers' Vernon Davis hit with concussion

- Around the League Writer
- Published: Dec. 23, 2012 at 10:38 p.m.
- Updated: Dec. 24, 2012 at 12:18 a.m.
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Pro Bowl tight end Vernon Davis sustained a concussion and Mario Manningham suffered a knee injury during Sunday's 42-13 loss to the Seattle Seahawks.











