New York Giants' Mario Manningham catches a touchdown pass in front of San Francisco 49ers' Tramaine Brock (26) during the second half of the NFC Championship NFL football game Sunday, Jan. 22, 2012, in San Francisco. (AP Photo/Paul Sakuma)

San Francisco 49ers tight end Vernon Davis (85) celebrates his touchdown catch with teammates during the second half of the NFC Championship NFL football game Sunday, Jan. 22, 2012, in San Francisco. (AP Photo/Julie Jacobson)

New England Patriots head coach Bill Belichick watches confetti during the trophy presentation following their AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. The Patriots defeated the Ravens 23-20 to win the AFC Championship. (AP Photo/Stephan Savoia)

San Francisco 49ers quarterback Alex Smith is introduced before the NFC Championship NFL football game against the New York Giants Sunday, Jan. 22, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers' Frank Gore (21) is tackled by New York Giants' Chase Blackburn (93) during the second half of the NFC Championship NFL football game Sunday, Jan. 22, 2012, in San Francisco. (AP Photo/David J. Phillip)

New York Giants fullback Henry Hynoski (45) is tackled by San Francisco 49ers cornerback Tarrell Brown (25) in the NFC Championship game at Candlestick Park on Sunday, January 22, 2012 in San Francisco, CA. (Kirby Lee/NFL)

New York Giants receiver Victor Cruz (80) catches a pass as San Francisco 49ers cornerback Carlos Rogers (22) defends in the NFC Championship game at Candlestick Park on Sunday, January 22, 2012 in San Francisco, CA. (Kirby Lee/NFL)

New York Giants head coach Tom Coughlin argues a call with head linesman Mark Hittner (28) during the first half of the NFC Championship NFL football game against the San Francisco 49ers Sunday, Jan. 22, 2012, in San Francisco. (AP Photo/David J. Phillip)

San Francisco 49ers head coach Jim Harbaugh reacts to a call during the first half of the NFC Championship NFL football game against the New York Giants Sunday, Jan. 22, 2012, in San Francisco. (AP Photo/Julie Jacobson)

Jan 22, 2012; Foxborough, MA, USA; New England Patriots owner Robert Kraft (right) talks with CBS announcer Jim Nance (left) after defeating the Baltimore Ravens 23-20 in the 2011 AFC Championship game at Gillette Stadium. Mandatory Credit: David Butler II-US PRESSWIRE

San Francisco 49ers running back Kendall Hunter (32) is tripped up by New York Giants cornerback Aaron Ross (31) during the first half of the NFC Championship NFL football game Sunday, Jan. 22, 2012, in San Francisco. (AP Photo/David J. Phillip)

Baltimore Ravens kicker Billy Cundiff (7) walks off the field as New England Patriots outside linebacker Niko Koutouvides (90) celebrates after Cundiff missed a 32 yard field goal in the closing seconds of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. The Patriots defeated the Ravens 23-20 to win the AFC Championship. (AP Photo/Winslow Townson)

New England Patriots quarterback Tom Brady (12) dives over the middle to score on a one yard run against the Baltimore Ravens during the second half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Elise Amendola)

New England Patriots quarterback Tom Brady (12) celebrates after scoring a one yard touchdown during the second half of the AFC Championship NFL football game against the Baltimore Ravens Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Stephan Savoia)

Jan 22, 2012; Foxborough, MA, USA; Baltimore Ravens quarterback Joe Flacco (5) is sacked by New England Patriots defensive end Mark Anderson (95) in the first quarter during the 2011 AFC Championship game at Gillette Stadium. Mandatory Credit: Greg M. Cooper-US PRESSWIRE

Baltimore Ravens cornerback Lardarius Webb (21) intercepts a pass intended for New England Patriots wide receiver Julian Edelman (11) during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Charles Krupa)

Baltimore Ravens strong safety Bernard Pollard (31) tries to pull down New England Patriots tight end Rob Gronkowski (87) during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Matt Slocum)

Jan 22, 2012; Foxborough, MA, USA; New England Patriots running back BenJarvus Green-Ellis (42) carries the ball without his helmet past Baltimore Ravens inside linebacker Dannell Ellerbe (59) in the second quarter during the 2011 AFC Championship game at Gillette Stadium. Mandatory Credit: Greg M. Cooper-US PRESSWIRE

Jan 22, 2012; Foxborough, MA, USA; Baltimore Ravens wide receiver Torrey Smith (82) reaches for the endzone and scores a touchdown as New England Patriots cornerback Devin McCourty (32) defends in the third quarter during the 2011 AFC Championship game at Gillette Stadium. Mandatory Credit: David Butler II-US PRESSWIRE

Baltimore Ravens cornerback Lardarius Webb (21) attempts to stop New England Patriots wide receiver Wes Welker (83) during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Winslow Townson)

Baltimore Ravens tight end Kris Wilson (87) is defended by New England Patriots cornerback Devin McCourty (32) as he tries to make a catch during the second half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Matt Slocum)

New England Patriots quarterback Tom Brady (12) celebrates after scoring a one yard touchdown during the second half of the AFC Championship NFL football game against the Baltimore Ravens Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Stephan Savoia)

Baltimore Ravens defensive back Emanuel Cook (37) grabs a loose ball away from New England Patriots running back Lousaka Polite (36) and Ray Lewis (52) after it was fumbled by New England Patriots running back Danny Woodhead (39) during the second half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. The Ravens recovered the ball. (AP Photo/Matt Slocum)

New York Giants receiver Mario Manningham (82) is defended by San Francisco 49ers cornerback Tramaine Brock (26) and safety Reggie Smith (30) on a 17-yard touchdown reception in the NFC Championship game at Candlestick Park on Sunday, January 22, 2012 in San Francisco, CA. The Giants defeated the 49ers 20-17 in overtime. (Kirby Lee/NFL)

New York Giants head coach Tom Coughlin, center, celebrates with players in the locker room after the NFC Championship NFL football game against the San Francisco 49ers Sunday, Jan. 22, 2012, in San Francisco. The Giants won 20-17 in overtime to advance to Super Bowl XLVI. (AP Photo/David J. Phillip)

New York Giants kicker Lawrence Tynes (9) celebrates with Zak DeOssie (51) and Jerrel Jernigan after Tynes scored the game winning field goal during overtime of the NFC Championship NFL football game Sunday, Jan. 22, 2012, in San Francisco. The Giants won 20-17 to advance to Super Bowl XLVI. (AP Photo/Jeff Chiu)

New York Giants wide receiver Devin Thomas (15) celebrates in front of San Francisco 49ers punter Andy Lee (4) after overtime of the NFC Championship NFL football game Sunday, Jan. 22, 2012, in San Francisco. The Giants won 20-17 to advance to Super Bowl XLVI. (AP Photo/David J. Phillip)

New York Giants kicker Lawrence Tynes (9) and punter Steve Weatherford (5) celebrate after Tynes kicked the game winning field goal during overtime of the NFC Championship NFL football game Sunday, Jan. 22, 2012, in San Francisco. The Giants won 20-17 to advance to Super Bowl XLVI.(AP Photo/Marcio Jose Sanchez)

San Francisco 49ers' Vernon Davis (85) catches a touchdown pass in front of New York Giants' Corey Webster (23) during the second half of the NFC Championship NFL football game Sunday, Jan. 22, 2012, in San Francisco. (AP Photo/Julie Jacobson)