Aerosmith frontman Steven Tyler practices before the AFC Championship NFL football game between the New England Patriots and Baltimore Ravens Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Winslow Townson)

New England Patriots quarterback Tom Brady (12) warms up before the AFC Championship NFL football game against the Baltimore Ravens Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Stephan Savoia)

Wes Welker on the field at Gillette Stadium for pregame warmups on Sunday, January 22, 2012.

New England Patriots head coach Bill Belichick watches as tight end Aaron Hernandez (81) warms up before the AFC Championship NFL football game against the Baltimore Ravens Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Winslow Townson)

The New England Patriots run onto the field to start the AFC Championship NFL football game against the Baltimore Ravens Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Elise Amendola)

A fly-over during the National Anthem got the crowd ready for action at Gillette Stadium.

New England Patriots outside linebacker Dane Fletcher tackles Baltimore Ravens quarterback Joe Flacco (5) during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Stephan Savoia)

New England Patriots quarterback Tom Brady (12) as Baltimore Ravens inside linebacker Ray Lewis (52) closes in during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Elise Amendola)

New England Patriots defensive end Mark Anderson (95) sacks Baltimore Ravens quarterback Joe Flacco (5) during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Stephan Savoia)

New England Patriots' Stephen Gostkowski (3) kicks a field goal during the first half of the AFC Championship NFL football game against the Baltimore Ravens Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Matt Slocum)

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)

New England Patriots quarterback Tom Brady (12) hands off the ball to New England Patriots running back BenJarvus Green-Ellis (42) during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass.

New England Patriots defensive end Brandon Deaderick (71) stops Baltimore Ravens RB Ray Rice during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass. (AP Photo/Winslow Townson)

New England Patriots running back BenJarvus Green-Ellis (42) drags Baltimore Ravens defensive back Jimmy Smith (22) into the end zone for a touchdown during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough.

Baltimore Ravens strong safety Bernard Pollard (31) pulls down New England Patriots tight end Rob Gronkowski (87) after a pass reception during the first half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass.

Mark Anderson eyes Joe Flacco during the first half at Gillette Stadium.

Aaron Hernandez breaks a tackle during the first half.

Rob Gronkowski in action during the first half.

Tom Brady gets off a pass during the AFC Championship game on Sunday, January 22, 2012.

New England Patriots vs Baltimore Ravens, NFL AFC Championship game January 24, 2012.

Patriots nose tackle Vince Wilfork sacks Ravens quarterback Joe Flacco during his dominating performance in the AFC Championship

Patriots running back BenJarvus Green-Ellis fights for extra yards after having his halmet ripped off

Patriots quarterback Tom Brady dives over everyone as he scores a touchdown in the Patriots AFC Championship win over the Ravens

Members of the Patriots celebrate with the Lamar Hunt Trophy after their 23-20 AFC Championship win

Patriots honorary captains Teddy Bruschi (54), Drew Bledsoe (11), Troy Brown (80) and Ty Law (24) wave to the Gillette Stadium crowd

Patriots offensive coordinator Bill O'Brien and quarterback Tom Brady ceebrate together after the Patriots AFC Championship win

Patriots linebacker Jerod Mayo delivers a ball jarring hit on Ravens Fullback Vontae Leach

Patriots tight end Aaron Hernandez breaks free from a Ravens defender during the Patriots 23-20 AFC Championship win

Patriots running back BenJarvus Green-Ellis points to the teams "MHK" patch after scoring a touchdown in the Patriots 23-20 AFC Championship win

Patriots linebacker Brandon Spikes grabs his first career playoff interception in the Patriots 23-20 AFC Championship win

Patriots Chairman and CEO Robert Kraft gives a salute to his late wife Myra Kraft after the Patriots AFC Championship win

New England Patriots head coach Bill Belichick is interviewed by CBS television announcer Jim Nantz while Patriots quarterback Tom Brady (12) looks on during the post game trophy presentation at the AFC Championship

New England Patriots quarterback Tom Brady, right, is congratulated by former Patriots quarterback Drew Bledsoe following their AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass

Baltimore Ravens quarterback Joe Flacco (5) throws before being sacked during an AFC Championship NFL football Playoff game against the New England Patriots on January 22, 2012

New England Patriots quarterback Tom Brady, left, shakes hands with New England Patriots owner Robert Kraft after their AFC Championship NFL football game against the Baltimore Ravens Sunday, Jan. 22, 2012, in Foxborough, Mass

New England Patriots owner Robert Kraft holding the AFC Championship Trophy while his son, Patriots CEO Jonathan Kraft, looks on during the post game trophy presentation at the AFC Championship presentation

Baltimore Ravens quarterback Joe Flacco (5) throws before being sacked during an AFC Championship NFL football Playoff game against the New England Patriots on January 22, 2012

New England Patriots linebacker Jerod Mayo (51) celebrates after an AFC Championship NFL football Playoff game against the Baltimore Ravens on January 22, 2012

Baltimore Ravens wide receiver Lee Evans (83) is stripped of the ball by New England Patriots free safety Sterling Moore (29) during the second half of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass

New England Patriots defensive tackle Vince Wilfork (75) celebrates during the closing seconds of the AFC Championship NFL football game Sunday, Jan. 22, 2012, in Foxborough, Mass