San Francisco 49ers tight end Delanie Walker, right, breaks away from Baltimore Ravens cornerback Cary Williams during the first half of the NFL Super Bowl XLVII football game Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Marcio Sanchez)

Photo by: Marcio Sanchez

San Francisco 49ers tight end Delanie Walker, right, breaks away from Baltimore Ravens cornerback Cary Williams during the first half of the NFL Super Bowl XLVII football game Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Marcio Sanchez)