Kansas City Chiefs Hall of Fame quarterback Len Dawson in 1970. (National Football League)

Pro Football Hall of Fame and Kansas City Chiefs quarterback Len Dawson (16) commanding the huddle in the Chiefs 23-7 victory over the Vikings in Super Bowl IV on 1/11/1970 at Tulane Stadium in New Orleans Louisiana. (Vernon Biever/NFL)

Quarterback Len Dawson #16 of the Kansas City Chiefs hands off to running back Ed Podolak #14 against the San Diego Chargers at San Diego Stadium on September 19, 1971 in San Diego, California. The Chargers defeated the Chiefs 21-14. (Charles Aqua Viva/NFL)

Houston Oilers defensive tackle Ed Culpepper (78) charges towards Dallas Texans Hall of Fame quarterback Len Dawson (16) as another defender tries to wrap him up during the AFL Championship Game, a 20-17 Texans victory on December 23, 1962, at Jeppesen Stadium in Houston, Texas. (Photo by Lou Witt/NFL Photos)

Kansas City Chiefs Hall of Fame quarterback Len Dawson during a 23-7 win over the Minnesota Vikings in Super Bowl IV on January 11, 1970 at Tulane Stadium in New Orleans, Louisiana. (Darryl Norenberg/NFL)

Kansas City Chiefs quarterback Len Dawson #16 of the American Conference sets the offense against the National Conference in the 1972 NFL Pro Bowl on January 23, 1972 at the Los Angeles Memorial Coliseum in the Los Angeles, California. The American Conference defeated the National Conference 26-13. (Darryl Norenberg/NFL)

Quarterback Len Dawson #16 of the Kansas City Chiefs hands off to running back Ed Podolak #14 against the San Diego Chargers at San Diego Stadium on September 19, 1971 in San Diego, California. The Chargers defeated the Chiefs 21-14. (Charles Aqua Viva/NFL)

Kansas City Chiefs Hall of Fame quarterback Len Dawson makes a hand off pass in a 37-7 loss to the Oakland Raiders at Oakland-Alameda County Coliseum in Oakland, California on on December 8, 1973. (George Long/NFL)

Quarterback Len Dawson of the Kansas City Chiefs prepares to handoff during a 27-9 victory over the San Diego Chargers on September 14, 1969, at San Diego Stadium in San Diego, California. (National Football League)

AFL Commissioner Joe Foss stands with Dallas Texans fullback Curtis McClinton (32) and Hall of Fame quarterback Len Dawson (16) following the AFL Championship Game, a 20-17 victory over the Houston Oilers on December 23, 1962, at Jeppesen Stadium in Houston, Texas. (National Football League)

Kansas City Chiefs quarterback Lenny Dawson (16) is shown in 1974 during a game against the Pittsburgh Steelers, in Pittsburgh. (Associated Press)

Kansas City Chiefs Hall of Fame quarterback Len Dawson (16) drops back to pass during game against the Boston Patriots in Kansas City, Dec. 6 1964. The Patriots defeated the Chiefs 31-24. (National Football League)

Len Dawson, Kansas City Chiefs shown in 1973. (AP Photo/William Straeter)

Len Dawson, right, quarterback for the Kansas City Chiefs football team, announces, April 4, 1972 in Kansas City he will play for another two years. The smiling man at left is head coach Hank Stram. There had been speculation that Dawson would retire from the game. (Associated Press)

Kansas City Chiefs' quarterback Len Dawson (16) gets ready to release the ball during the first Super Bowl, Jan. 15, 1967, against the Green Bay Packers at the Los Angeles Coliseum in Los Angeles, California. The Green Bay Packers won the game. (Associated Press)

Len Dawson (left) and Fred Arbanas board the plane that will take the Kansas City Chiefs AFL Western division champs to Buffalo, N.Y. where they will play the Eastern champs in the New Year�s Day title game. In background, part of the send-off crowd is shown in Kansas City, Dec. 31, 1966. (AP Photo/William Straeter)

Len Dawson of the Kansas City Chiefs runs through passing drills with receivers in New Orleans on Jan. 10, 1970 to prepare for the Super Bowl. Dawson will be the starting quarterback in the fourth annual World Championship game. (Associated Press)

Kansas City Chiefs Hall of Fame quarterback Len Dawson (16)drops back to pass during game against the San Diego Chargers, Sept. 19, 1971. The Chargers defeated the Chiefs 21-14 at San Diego Stadium. (National Football League)

Green Bay Packers defensive end Lionel Aldridge (82) pressures Kansas City Chiefs Hall of Fame quarterback Len Dawson (16) during Super Bowl I, a 35-10 Packers victory on January 15, 1967, at the Los Angeles Memorial Coliseum in Los Angeles, California. (National Football League)

Kansas City Chiefs Hall of Fame quarterback Len Dawson (16) during Super Bowl I, a 35-10 loss to the Green Bay Packers on January 15, 1967, at the Los Angeles Memorial Coliseum in Los Angeles, California. (National Football League)

Kansas City Chiefs' Len Dawson in action against the San Diego Chargers at San Diego Stadium in San Diego Oct. 15, 1967. (Rich Clarkson/AP Images)

In this undated file photo, Kansas Ctiy Chiefs quarterback Len Dawson is shown in action. (Associated Press)

Kansas City Chiefs quarterback Len Dawson (16) looks for an opening, Jan. 15, 1967 in Super Bowl I game against Green Bay Packers, at Los Angeles California's Memorial Coliseum. Other players are unidentified. The Packers won, 35-21. (Associated Press)