Clarance (Ace) Parker of Portsmouth, Virginia on Feb. 8, 1972, displays pictures of the playing days after receiving news he had been elected to the Pro Football Hall of Fame. Called the last of the great triple-threat quarterbacks of pro football, Parker is now a staff scout with the San Francisco 49ers. (AP Photo)

NFL Films founder Ed Sabol thanks the crowd after receiving his Hall of Fame jacket during the Pro Football Hall of Fame enshrinees dinner at the Civic Auditorium in Canton, Ohio on Friday Aug. 5, 2011. (Ben Liebenberg/NFL)

Buffalo Bills' owner Ralph Wilson Jr. stands next to a bust of himself during a halftime NFL football ceremony against the Houston Texans in Orchard Park, N.Y., Sunday Nov. 1, 2009.(AP Photo/Dean Duprey)

Steve Van Buren of the Philadelphia Eagles is about to heave a forward pass in Philadelphia, Pa in an undated photo. (AP Photo)

Pro Football Hall of Fame member Charley Trippi poses with memorabilia at his home in Athens, Ga., Tuesday, Jan, 27, 2009. Trippi played for the Chicago Cardinals in the 1947 NFL Championship game. (AP Photo/John Bazemore)

Chuck Bednarik of the Philadelphia Eagles hands his jersey and shoes to equipment manager Freddie Schubach in St. Louis, Dec. 16, 1962 after game which the St. Louis Cardinals won 45-35. The game was Bednarik's last. The jersey and the shoes will be placed in the Football Hall of Fame. (AP Photo)

Hall of Fame football coach Marv Levy backstage during the 2012 Hall of Fame Announcement at the J.W. Marriott, in Indianapolis, Indiana on Tuesday, Feb 4, 2012. (Ben Liebenberg/NFL)

Baltimore Colts Hall of Fame defensive tackle Art Donovan. (National Football League)

Hall of fame football player Y.A. Tittle is shown before an NFL football game between the San Francisco 49ers and the Seattle Seahawks in San Francisco, Sunday, Sept. 11, 2011. (AP Photo/Paul Sakuma)

Hall of Fame defensive end Gino Marchetti (89) of the Baltimore Colts with Hall of Fame head coach Don Shula during the NFL West squad's 34-14 victory over the NFL East squad in the 1965 NFL Pro Bowl on January 10, 1965 at the Los Angeles Memorial Coliseu (National Football League)

Former NFL player Jack Butler after being named to the 2012 Hall of Fame class during the 2012 Hall of Fame Announcement at the J.W. Marriott, in Indianapolis, Indiana on Tuesday, Feb 4, 2012. (Ben Liebenberg/NFL)

Former Minnesota Vikings Hall of Fame coach Bud Grant addresses a news conference Tuesday, May 10, 2011 in Arden Hills, Minn., after the announcement that the Vikings NFL team had a deal with Ramsey County to collaborate on a $1.1 billion retractable-roof football stadium to be built on the site of the former Army ammunitions plant in Arden Hills. (AP Photo/Jim Mone)

Hall of fame running back Hugh McElhenny before an NFL football game between the San Francisco 49ers and the Seattle Seahawks in San Francisco, Sunday, Sept. 11, 2011. (AP Photo/Paul Sakuma)

Former Miami Dolphins head coach Don Shula speaks during the half-time show of an NFL football game against the Oakland Raiders, Sunday, Dec. 4, 2011, in Miami , Fla. (AP Photo/Hans Deryk)

Doug Atkins holds a bust of himself after being inducted into the National Pro Football Hall of Fame in Canton, Ohio, Aug. 6, 1982. Atkins played for Cleveland Browns, Chicago Bears and the New Orleans Saints. (AP Photo/Amy Sancetta)

Frank Gifford arrives for a private luncheon rally for the New York Giants NFL football team on Wednesday, Feb. 1, 2012, in New York. (AP Photo/Frank Franklin II)

Former Detroit Lions safety Yale Lary stands during a half time ceremony naming the teams 75th season all-time team during an NFL football in Detroit, Sunday, Nov. 9, 2008. (AP Photo/Paul Sancya)

Former offensive tackle Bob St. Clair of the San Francisco 49ers wearing his NFL Pro Football Hall of Fame induction jacket during pregame ceremonies honoring former Niners prior to the game against the Minnesota Vikings at Monster Park on November 5, 2006 in San Francisco, California. (AP Photo/Paul Spinelli)

Baltimore Colts head coach Mike McCormack in 1980 (National Football League)

Super Bowl-winning coach Chuck Noll, formerly of the Pittsburgh Steelers, helps perform the ceremonial coin toss before Super Bowl XXXI on January 26, 1997, at the Louisiana Superdome in New Orleans, Louisiana. (National Football League)

Detroit Lions great Joe Schmidt is seen during halftime of an NFL football game against the Cleveland Browns in Detroit, Sunday, Nov. 22, 2009. (AP Photo/Carlos Osorio)

Pittsburgh Steelers President Emeritus Dan Rooney visits with members of the 110th Special Forces Unit before the NFL football game between the Pittsburgh Steelers and the Baltimore Ravens, Sunday, Nov. 6, 2011, in Pittsburgh. The special forces are not permitted to reveal their names. (AP Photo/Gene J. Puskar)

Baltimore Colts wide receiver Raymond Berry, inducted into the Pro Football Hall of Fame class of 1973, makes a catch during a game in 1968. (National Football League)

In this Nov. 14, 2011 photo, Hall of Fame football player Forrest Gregg shows one of his Super Bowl Championship rings after an interview where he talked about his battle with Parkinson's disease, in Colorado Springs, Colo., (AP Photo/Ed Andrieski)

Lenny Moore, Baltimore Colts halfback from Penn State, at the team's summer training camp at Western Maryland College in Westminster, Maryland on July 18, 1960. (Associated Press)

Hall of Fame quarterback Bart Starr carries a Green Bay Packers flag on the field during introductions before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Jim Prisching)

Willie Davis former defensive tackle of Grambling State University and later with the Green Bay Packers gives a speech on Saturday, February 19, 2011 during the Black College Football Hall of Fame at the Four Seasons Hotel in Atlanta, Georgia. (AP Photo/Don Juan Moore)

Hall of Famer Tommy McDonald dances while being introduced at the 2010 Hall of Fame Enshrinement Ceremony at Fawcett Stadium in Canton, Ohio on Aug. 8, 2010. (Ben Liebenberg/NFL)

Hall of Fame quarterback Sonny Jurgensen of the Washington Redskins, the team's radio analyst, is on the field before the Redskins 27-20 loss to the Atlanta Falcons on September 25, 1994 at RFK Stadium in Washington, D.C. (National Football League)

Sam Huff waves to the crowd during the Hall of Fame induction ceremony on July 29, 2000 in Canton,Ohio. (AP Photo/Paul Spinelli)

Former New York Jets player Don Maynard signs autographs before an NFL football game between the New York Jets and the New England Patriots at New Meadowlands Stadium in East Rutherford, N.J., Sunday, Sept. 19, 2010. (AP Photo/Seth Wenig)

Jim Taylor is shown at the NFL football draft at Radio City Music Hall, Friday, April 29, 2011, in New York. (AP Photo/Frank Franklin II)

Former Green Bay Packer Paul Hornung waves to the crowd during the second half of an NFL football game between the Green Bay Packers and Denver Broncos Sunday, Oct. 2, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Jim Brown is seen in the audience during the inaugural NFL Honors show Saturday, Feb. 4, 2012, in Indianapolis. (Perry Knotts/NFL)

Former Washington Redskins player Bobby Mitchell is honored during pregame player introductions during the NFL week 9 football game against the San Francisco 49ers on Sunday, November 6, 2011 in Landover, Maryland. (AP Photo/Paul Spinelli)

Len Dawson is seen at a Pro Football Hall of Fame Party at Cleveland Browns Stadium in Cleveland on Saturday, July 29, 2000. (AP Photo/Jamie-Andrea Yanak)

Hall of Fame coach John Madden speaks during the Prilosec Madden Most Valuable Protectors press conference at the Super Bowl XLV media center in the Dallas Sheraton in Dallas, Texas on February 3, 2011. (Gary A. Vasquez/NFL)

Former Green Bay Packers player Willie Wood visits Capitol Hill in Washington, Wednesday, Oct. 28, 2009. (AP Photo/Charles Dharapak)

Pittsburgh Steelers defensive coordinator Dick LeBeau before the Steelers play against the San Francisco 49ers during the NFL game at Candlestick Park in San Francisco, on Monday, Dec. 19, 2011. (Ben Liebenberg/NFL)

Hall of Famer Jim Otto waves as he is introduced during the enshrinement ceremonies at the Pro Football Hall of Fame in Canton, Ohio Saturday, Aug. 7, 2010. (AP Photo/Mark Duncan)

Offensive lineman Ron Mix of the San Diego Chargers poses for a photograph. (National Football League)

Hall of Fame member Larry Wilson poses for a photograph during the Pro Football Hall of Fame Induction Ceremony at the Pro Football Hall of Fame in Canton, Ohio, Saturday, Aug. 4, 2007. (AP Photo/Phil Long)

Former 49ers cornerback Jimmy Johnson looks on during a halftime ceremony honoring Young's induction into the Pro Football Hall of Fame on Sunday, Nov. 20, 2005. (AP Photo/Jeff Chiu)

Former Rams player and NFL hall of fame member Deacon Jones speaks to the crowd as his number is retired prior to a game between the St. Louis Rams and Green Bay Packers at the Edward Jones Dome on September 27, 2009 in St. Louis, Missouri. (AP Photo/G. Newman Lowrance)

Former Buffalo Bills great Billy Shaw looks on after being enshrined in the Pro Football Hall of Fame Saturday, Aug. 7, 1999 in Canton, Ohio. (AP Photo/Mark Duncan)

Former Dallas Cowboys player Bob Lilly claps during the NFL Pro Football Hall of Fame preseason football game between the Dallas Cowboys and the Cincinnati Bengals on Sunday, August 8, 2010 in Canton, Ohio. (AP Photo/Paul Spinelli)

Mike Ditka speaks at the podium during a ceremony on the South Lawn of the White House in Washington, Friday, Oct. 7, 2011.(AP Photo/Pablo Martinez Monsivais)

Hall of Fame quarterback Fran Tarkenton (10) of the Minnesota Vikings in 1966. (National Football League)

National Football League Hall of Famer Jackie Smith, a former tight end for the St. Louis Cardinals kneels in front of his star along Delmar Boulevard in University City, Mo., Sunday, May 20, 2001. (AP Photo/James A. Finley)

Former NFL player Herb Adderley sits next to a wax copy of his bronze Hall of Fame bust in a room full of memorabilia of his playing days with the Green Bay Packers, at his home in Mantua, N.J., Oct. 2, 2008. (AP Photo/Mel Evans)