Baltimore Ravens running back Bernard Pierce (30) celebrates after defeating the San Francisco 49ers during Super Bowl XLVII at the Mercedes-Benz Superdome on Sunday, Feb. 3, 2013 in New Orleans. The Ravens won 34-31. (Perry Knotts/NFL)

Baltimore Ravens running back Ray Rice, center, rushes past Dallas Cowboys defenders Mike Jenkins, right, and Bruce Carter in the first half of an NFL football game in Baltimore, Sunday, Oct. 14, 2012. (AP Photo/Patrick Semansky)

Baltimore Ravens wide receiver Anquan Boldin (81) celebrates his touchdown with fullback Vonta Leach during the first half of an NFL football game against the Washington Redskins in Landover, Md., Sunday, Dec. 9, 2012. (AP Photo/Nick Wass)

Baltimore Ravens running back Ray Rice reacts after scoring a touchdown in the second half of an NFL football game against the Dallas Cowboys in Baltimore, Sunday, Oct. 14, 2012. (AP Photo/Nick Wass)

Baltimore Ravens quarterback Joe Flacco (5) celebrates his touchdown run as Cleveland Browns outside linebacker Scott Fujita watches during the second half of an NFL football game in Baltimore, Thursday, Sept. 27, 2012. (AP Photo/Patrick Semansky)

Baltimore Ravens quarterback Joe Flacco (5) runs behind the blocking of center Matt Birk (77) during the second half of an NFL football game against the Baltimore Ravens at Arrowhead Stadium in Kansas City, Mo., Sunday, Oct. 7, 2012. The Ravens defeated the Chiefs 9-6. (AP Photo/Ed Zurga)

Baltimore Ravens wide receiver Jacoby Jones, right, looks back as he runs in a 105-yard touchdown in the second half of an NFL football game against the Oakland Raiders in Baltimore, Sunday, Nov. 11, 2012. Baltimore won 55-20. (AP Photo/Nick Wass)

Baltimore Ravens running back Ray Rice (27) celebrates with fans after the Ravens defeated the San Diego Chargers 16-13 in overtime during an NFL football game, Sunday, Nov. 25, 2012, in San Diego. (AP Photo/Denis Poroy)

Baltimore Ravens quarterback Joe Flacco passes the ball during the first half of an NFL football game against the Denver Broncos in Baltimore, Sunday, Dec. 16, 2012. (AP Photo/Nick Wass)

Baltimore Ravens fullback Vonta Leach, top, leaps over Dallas Cowboys cornerback Morris Claiborne in the second half of an NFL football game in Baltimore, Sunday, Oct. 14, 2012. Baltimore won 31-29. (AP Photo/Nick Wass)

Oakland Raiders cornerback Michael Huff (24) breaks up a pass intended for Baltimore Ravens wide receiver Torrey Smith (82) in the first half of an NFL football game in Baltimore, Sunday, Nov. 11, 2012. (AP Photo/Nick Wass)

Baltimore Ravens wide receiver Jacoby Jones celebrates as he crosses the goal line for a touchdown against the Denver Broncos in the fourth quarter of an AFC divisional playoff NFL football game, Saturday, Jan. 12, 2013, in Denver. (AP Photo/Joe Mahoney)

Washington Redskins inside linebacker Perry Riley (56) watches as Baltimore Ravens tight end Dennis Pitta (88) pulls in a touchdown pass during the first half of an NFL football game in Landover, Md., Sunday, Dec. 9, 2012. (AP Photo/Nick Wass)

Baltimore Ravens running back Bernard Pierce leaps over Washington Redskins cornerback DeAngelo Hall (23) during the second half of an NFL football game in Landover, Md., Sunday, Dec. 9, 2012. (AP Photo/Nick Wass)

Baltimore Ravens running back Ray Rice celibates his touchdown during the second half of an NFL football game against the Washington Redskins in Landover, Md., Sunday, Dec. 9, 2012. (AP Photo/Alex Brandon)

Baltimore Ravens linebacker Ray Lewis reacts as he is introduced before an NFL preseason football game against the Detroit Lions in Baltimore, Friday, Aug. 17, 2012. (AP Photo/Nick Wass)

Baltimore Ravens running back Ray Rice (27) goes in for a two-yard touchdown run against New England Patriots outside linebacker Dont'a Hightower (54) during the first half of the NFL football AFC Championship football game in Foxborough, Mass., Sunday, Jan. 20, 2013. (AP Photo/Matt Slocum)

Pittsburgh Steelers cornerback Ike Taylor, right, breaks up a pass intended for Baltimore Ravens wide receiver Torrey Smith during the first half of an NFL football game in Baltimore, Sunday, Dec. 2, 2012. (AP Photo/Patrick Semansky)

Baltimore Ravens running back Bernard Pierce, center, rushes past New York Giants outside linebacker Spencer Paysinger, back left, and middle linebacker Chase Blackburn in the first half of an NFL football game in Baltimore, Sunday, Dec. 23, 2012. (AP Photo/Nick Wass)

Baltimore Ravens running back Bernard Pierce, right, tries to outrun Dallas Cowboys inside linebacker Bruce Carter in the first half of an NFL football game in Baltimore, Sunday, Oct. 14, 2012. (AP Photo/Nick Wass)

Baltimore Ravens wide receiver Torrey Smith, left, completes a 43-yard pass as he is pressured by New York Giants cornerback Corey Webster in the first half of an NFL football game in Baltimore, Sunday, Dec. 23, 2012. (AP Photo/Gail Burton)

Baltimore Ravens punter Sam Koch, center, runs into the end zone for a touchdown on a faked field goal attempt in the second half of an NFL football game against the Oakland Raiders in Baltimore, Sunday, Nov. 11, 2012. (AP Photo/Nick Wass)

Baltimore Ravens linebacker Ray Lewis (52) celebrates a key defensive stop during the AFC Championship football game against the New England Patriots at Gillette Stadium on Sunday January 20, 2013 in Foxborough, Massachusetts. Baltimore won 28-13. (Aaron M. Sprecher/NFL)

Baltimore Ravens rookie running back Bernard Pierce (30) rushes for a gain during the AFC Championship football game against the New England Patriots at Gillette Stadium on Sunday January 20, 2013 in Foxborough, Massachusetts. Baltimore won 28-13. (Aaron M. Sprecher/NFL)

Baltimore Ravens running back Ray Rice (27) runs the ball during the AFC Divisional playoff game against the Denver Broncos at Sports Authority Field at Mile High in Denver, Colorado on January 12, 2013. (Ric Tapia/NFL)

Baltimore Ravens quarterback Joe Flacco (5) celebrates during the AFC Divisional playoff game against the Denver Broncos at Sports Authority Field at Mile High in Denver, Colorado on January 12, 2013. (Ric Tapia/NFL)

Baltimore Ravens linebacker Ray Lewis (52) and running back Ray Rice (27) celebrate after defeating the Denver Broncos in the AFC Divisional playoff game at Sports Authority Field at Mile High in Denver, Colorado on January 12, 2013. (Ric Tapia/NFL)

Baltimore Ravens Paul Kruger (99) and Cary Williams (29) pile on Houston Texans wide receiver Andre Johnson during the third quarter of an NFL football game, Sunday, Oct. 21, 2012, in Houston. (AP Photo/Patric Schneider)

Baltimore Ravens fullback Vonta Leach, top, is upended by New England Patriots cornerback Devin McCourty as he rushes the ball in the first half of an NFL football game in Baltimore, Sunday, Sept. 23, 2012. (AP Photo/Nick Wass)

Baltimore Ravens wide receiver Jacoby Jones (12) scores a touchdown against the San Francisco 49ers during the NFL Super Bowl XLVII at the Mercedes-Benz Superdome in New Orleans, LA on Sunday, February 3, 2013. (Steve Sanders/NFL)

Baltimore Ravens quarterback Joe Flacco (5) looks to throw a pass against the San Francisco 49ers during the NFL Super Bowl XLVII at the Mercedes-Benz Superdome in New Orleans, LA on Sunday, February 3, 2013. (Steve Sanders/NFL)

Wide receiver Anquan Boldin #81 of the Baltimore Ravens catches a touchdown pass against safety Donte Whitner #31 of the San Francisco 49ersduring Super Bowl XLVII at the Mercedes-Benz Superdome in New Orleans, LA on Sunday, February 3, 2013. (Ben Liebenberg/NFL)

Safety Bernard Pollard #31 of the Baltimore Ravens celebrates following his team's victory over the San Francisco 49ers in Super Bowl XLVII at the Mercedes-Benz Superdome in New Orleans, LA on Sunday, February 3, 2013. (Ben Liebenberg/NFL)

Baltimore Ravens fullback Vonta Leach (44) makes a confetti angel after defeating the San Francisco 49ers during Super Bowl XLVII at the Mercedes-Benz Superdome on Sunday, Feb. 3, 2013 in New Orleans. The Ravens won 34-31. (Perry Knotts/NFL)

Inside linebacker Ray Lewis #52 of the Baltimore Ravens celebrates following his team's victory over the San Francisco 49ers in Super Bowl XLVII at the Mercedes-Benz Superdome in New Orleans, LA on Sunday, February 3, 2013. (Ben Liebenberg/NFL)