Article Photos: Ravens left with only walk-through before Sunday 4/4

Baltimore Ravens head coach John Harbaugh, left, walks past tight end Dennis Pitta during an NFL Super Bowl XLVII practice on Friday, Feb. 1, 2013, in Metairie, La. The Ravens face the San Francisco 49ers in Super Bowl XLVII on Sunday, Feb. 3. (AP Photo/Patrick Semansky)