
** FILE ** Baltimore Ravens fans break through barriers and walk with players during a victory parade last week in Baltimore to celebrate the team’s 34-31 win over the San Francisco 49ers in Super Bowl XLVII. (Associated Press)

** FILE ** Baltimore Ravens fans break through barriers and walk with players during a victory parade last week in Baltimore to celebrate the team’s 34-31 win over the San Francisco 49ers in Super Bowl XLVII. (Associated Press)

** FILE ** Baltimore Ravens fans break through barriers and walk with players during a victory parade last week in Baltimore to celebrate the team’s 34-31 win over the San Francisco 49ers in Super Bowl XLVII. (Associated Press)

** FILE ** Beyonce performs during the halftime show of the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gerald Herbert)

**FILE** Fans and members of the Baltimore Ravens and the San Francisco 49ers wait for power to return in the Superdome during an outage in the second half of Super Bowl XLVII on Feb. 3, 2013, in New Orleans. (Associated Press)

**FILE** Baltimore Ravens head coach John Harbaugh (left) and his younger brother, San Francisco 49ers head coach Jim Harbaugh, participate in a Feb. 1, 2013, news conference in New Orleans for Super Bowl XLVII. (Associated Press)

**FILE** Fans and members of the Baltimore Ravens and the San Francisco 49ers wait for power to return in the Superdome during an outage in the second half of Super Bowl XLVII on Feb. 3, 2013, in New Orleans. (Associated Press)

Baltimore Ravens president Dick Cass, from left, head coach John Harbaugh, general manager and executive vice president Ozzie Newsome and owner Steve Bisciotti speak alongside the Vince Lombardi Trophy at an NFL football news conference on Thursday, Feb. 7, 2013, in Owings Mills, Md. The Ravens beat the San Francisco 49ers 34-31 in Super Bowl XLVII last Sunday. (AP Photo/Patrick Semansky)

Baltimore Ravens president Dick Cass, from left, head coach John Harbaugh, general manager and executive vice president Ozzie Newsome and owner Steve Bisciotti speak alongside the Vince Lombardi Trophy at an NFL football news conference on Thursday, Feb. 7, 2013, in Owings Mills, Md. The Ravens beat the San Francisco 49ers 34-31 in Super Bowl XLVII last Sunday. (AP Photo/Patrick Semansky)