FILE - In this Jan. 9, 1977, file photo, Oakland Raiders quarterback Ken Stabler celebrates completing a touchdown pass en route to his team's 32-14 victory over the Minnesota Vikings in the NFL football Super Bowl in Pasadena, Calif. The only thing missing when Stabler is inducted into the Hall of Fame on Aug. 6, 2016, will be Stabler himself. (AP Photo/File)

Oakland Raiders wide receiver Fred Biletnikoff (25) runs upfield after catching a pass during Superbowl XI Jan. 9, 1977, at the Rose Bowl in Pasadena, Calif. The Oakland Raiders defeated the Minnesota Vikings by the score of 32�14. (Tony Tomsic via AP)

Oakland Raiders' wide receivers Cliff Branch (21) and Fred Biletnikoff (25) celebrate after winning Super Bowl XI on Jan. 9, 1977, at the Rose Bowl in Pasadena, Calif. The Oakland Raiders defeated the Minnesota Vikings by the score of 32�14. (Tony Tomsic via AP)

FILE Coach John Madden of the Oakland Raiders is carried from the field by his players after his team defeated the Minnesota Vikings in Super Bowl XI in Pasadena, Calif., in this Jan. 9, 1977 photo. (AP Photo/File)

Oakland Raiders football during Super Bowl XV in New Orleans, La. 1981. (AP Photo)

Oakland Raiders quarterback Jim Plunkett (16) and head coach Tom Flores during Super Bowl XV Jan. 25, 1981, in New Orleans. The Oakland Raiders defeated the Philadelphia Eagles 27-10. (Tony Tomsic via AP)

Oakland Raiders defensive end John Matauszak (72) and teammates defend a kick during a Super Bowl XV NFL game against the Philadelphia Eagles in New Orleans, on January 25, 1981. The Raiders defeated the Eagles 27-10. (AP Photo/Vernon Biever)

FILE - In this Jan. 25, 1981, Oakland Raiders quarterback Jim Plunkett (16) throws during NFL football's Super Bowl XV in New Orleans against the Philadelphia Eagles. The first wild-card team to win the Super Bowl, the Raiders spent most of the year as a mistake-prone offensive mess. Oakland turned it over 44 times and finished 16th in total yards. Plunkett completed just 51 percent of his passes and had 16 interceptions to go with 18 touchdown passes. (AP Photo/File)

Oakland Raiders principal owner Al Davis holds up the Vince Lombardi Trophy in a jubilant Raiders locker room after they defeated the Philadelphia Eagles 27-10 in Super Bowl XV, Jan. 25, 1981. The Raiders, who had lost to the Eagles in the regular season, became the first wild-card team to win a Super Bowl. (AP Photo/Paul Sakuma)

Oakland Raiders quarterback Jim Plunkett, left, accepts congratulations from Philadelphia Eagles head coach Dick Vermeil after Super Bowl XV in New Orleans, Jan. 25, 1981. (AP Photo/Pete Leabo)

Los Angeles Raiders quarterback Jim Plunkett (16) looks to pass in a 38 - 9 win over the Washington Redskins in Super Bowl XVIII on January 22, 1984 at Tampa Stadium. (Al Messerschmidt via AP)

Los Angeles Raiders linebacker Jack Squirek (58) celebrates after an interception for a touchdown during Superbowl XVIII on Jan. 22, 1984, in Tampa, Fla. The Raiders defeated the Redskins 38-9. (Tony Tomsic via AP)

Los Angeles Raiders' Matt Millen gestures as he celebrates with teammate Reggie Kinlaw following the Raiders' 38-9 win over the Washington Redskins in Super Bowl XVIII at Tampa Stadium Sunday, Jan. 23, 1984. (AP Photo)

Coach Tom Flores gestures to members of the Los Angeles Raiders as they carry him off the field after their 38-9 victory over the Washington Redskins in Super Bowl XVIII in Tampa Jan. 23, 1984. (AP Photo)

Los Angeles Raiders general managing partner Al Davis, left, receives the Super Bowl trophy from NFL commissioner Pete Rozelle, right, as CBS-TV's Brent Musburger watches in the locker room at Tampa Stadium in Tampa, Fla., Jan. 23, 1984. (AP Photo/stf)

Oakland Raiders vs. San Diego Chargers at Oakland Alameda County Coliseum Sunday, September 3, 1995. Raiders beat Chargers 17-7. Oakland Raiders guard Greg Skrepenak (78) blocks for quarterback Jeff Hostetler (15). (AP Photo/Al Golub)

Oakland fans salute the return of the Raiders on Sunday, September 3, 1995, in Oakland, California. The Raiders defeated the Chargers 17-7. (AP Photo/Al Golub)

Oakland Raiders center Jim Otto wipes away a tear as he announces his retirement in Oakland, Sept. 3, 1975. The 37-year-old Otto, who has started at center at all 210 regular season games since the formation of the Raiders in 1960, will become business manager of the team. Otto said he is not being forced to retire but feels that his play this season is �not good enough to play the entire season�. (AP Photo)

Oakland Raiders coach Jon Gruden and kicker Sebastian Janikowski (11) celebrate the Raiders' 27-0 win over the Miami Dolphins during the final moments of the AFC divisional playoff game at the Network Associates Coliseum in Oakland, Calif., Saturday, Jan. 6, 2001. (AP Photo/Bob Galbraith)

Los Angeles Raiders head coach Art Shell is crowned with a bucket of ice water by Raiders Anthony Smith following the Raiders' 42-24 win over the Denver Broncos at the Coliseum on Jan 9, 1994 in Los Angeles. (AP Photo/Reed Saxon)

Los Angeles Raiders head coach Art Shell before a 13-10 victory over the New York Giants on October 4, 1992, at the Los Angeles Memorial Coliseum in Los Angeles, California. (AP Photo/NFL Photos)

Oakland Raiders Hall of Fame guard Gene Upshaw (63), center Jim Otto (00) and guard George Buehler (64) wait in the huddle during an NFL game against the Pittsburgh Steelers at the Oakland Alameda Coliseum on November 11, 1973. The Steelers defeated the Raiders 17-9. (Peter Read Miller via AP)

Oakland Raiders head coach Hue Jackson, center, quarterback Jason Campbell (8), and wide receiver Derek Hagan (80) pause during a moment of silence for deceased Raiders owner Al Davis before an NFL football game against the Houston Texans, Sunday, Oct. 9, 2011, in Houston. (AP Photo/Gerald Herbert)

Oakland Raiders Tim Brown and Jerry Rice are happy before Super Bowl XXXVII (37) verse the Tampa Bay Buccaneers on Sunday January 26, 2003 in San Diego. (AP Photo/Kevin Reece)

Oakland Raiders wide receiver Jerry Rice (80) skies for a catch during an NFL game against the Minnesota Vikings, Nov. 16, 2003 in Oakland. (AP Photo/Greg Trott)

Los Angeles Raiders running back Bo Jackson (34) rushes upfield in 1989. (Al Messerschmidt via AP)

FILE - In this Oct. 8, 2000, file photo, Oakland Raiders wide receiver Tim Brown celebrates after scoring the winning touchdown in overtime to give the Radiers a win over the San Francisco 49ers in an NFL football game in San Francisco. Brown was elected to the Pro Football Hall of Fame on Saturday, Jan. 31, 2015. (AP Photo/Paul Sakuma,/File)

Oakland Raiders quarterback Derek Carr, center, and defensive end Khalil Mack (52) celebrate after their NFL football game against the Houston Texans Monday, Nov. 21, 2016, in Mexico City. The Raiders won, 27-20. (AP Photo/Eduardo Verdugo)

General view of Estadio Azteca from an elevated position during the National Anthem before an NFL International Series game against the Houston Texans and the Oakland Raiders on Monday, Nov. 21, 2016 in Mexico City. (Ric Tapia via AP)

Oakland Raiders running back DeAndre Washington (33) celebrates after running for touchdown with quarterback Derek Carr (4) during the second half of an NFL football game against the Indianapolis Colts in Oakland, Calif., Saturday, Dec. 24, 2016. (AP Photo/Marcio Jose Sanchez)