Al Davis - Oakland Raiders

OAKLAND (CBS SF) - The Oakland Raiders say longtime owner and Hall of Famer Al Davis has died. He was 82.

It was not immediately clear when and where he died.

Davis was one of the most important figures in NFL history. He is best known as a rebel who established a team whose silver-and-black colors and pirate logo symbolized his attitude toward authority, both on the field and off.

It was Davis' rebellious spirit, that willingness to buck the establishment, that helped turn the NFL into the establishment in sports - the most successful sports league in American history.

(Photo by Justin Sullivan/Getty Images)

Oakland Raiders owner Al Davis (C) greets his play

OAKLAND, : Oakland Raiders owner Al Davis (C) greets his players Grady Jackson (L) and Mo Collins before their pre-season game against the Dallas Cowboys 15 August, 1999, in Oakland, California. The Raiders defeated the Cowboys, 10-7. AFP PHOTO/John G. MABANGLO (Photo credit should read JOHN G. MABANGLO/AFP/Getty Images)

Oakland Raiders owner Al Davis (L) talks to draft

NAPA, UNITED STATES: Oakland Raiders owner Al Davis (L) talks to draft pick Tim Kohn from Iowa State at the Raiders training camp 25 July in Napa, California. AFP PHOTO/JOHN G. MABANGLO (Photo credit should read JOHN G. MABANGLO/AFP/Getty Images)

Al Davis, the owner of the Oakland Raiders, smiles

OAKLAND, : Al Davis, the owner of the Oakland Raiders, smiles as he faces reporters and photographers after a press conference at the Oakland Alameda County Coliseum Arena 06 July. Davis has signed an agreement to move the Los Angeles Raiders back to Oakland, California, after leaving 14 years ago. AFP PHOTO (Photo credit should read JOHN G. MABANGLO/AFP/Getty Images)

Oakland Raiders v Kansas City Chiefs

KANSAS CITY, MO - DECEMBER 25: Quarterback Rich Gannon stands with Oakland Raiders owner Al Davis prior to the game against the Kansas City Chiefs at Arrowhead Field on December 25, 2004 in Kansas City, Missouri. The Chiefs defeated the Raiders 31-30. (Photo by Jamie Squire/Getty Images)

Class Of 2006 Pro Football Enshrinement Ceremony

CANTON, OH - AUGUST 5: Oakland Raiders owner Al Davis (L) and former Broadcaster and former Oakland Raider coach John Madden unveil his bust during the Class of 2006 Pro Football Hall of Fame Enshrinement Ceremony at Fawcett Stadium on August 5, 2006 in Canton, Ohio. (Photo by Doug Benc/Getty Images)

Class Of 2006 Pro Football Enshrinement Ceremony

05: Broadcaster and former coach Oakland Raider John Madden (L) gestures in front of a portrait of him after being introduced by Oakland Raider owner Al Davis during his induction during the Class of 2006 Pro Football Hall of Fame.

CANTON, OH - AUGUST 05: Broadcaster and former coach Oakland Raider John Madden (L) gestures in front of a portrait of him after being introduced by Oakland Raider owner Al Davis during his induction during the Class of 2006 Pro Football Hall of Fame Enshrinement Ceremony at Fawcett Stadium on August 5, 2006 in Canton, Ohio. (Photo by Doug Benc/Getty Images)

Roger Goodell Selected To Become New NFL Commissioner

NORTHBROOK, IL - AUGUST 08: Al Davis, owner of the Oakland Raiders, speaks to the media before a press conference announcing the selection of Roger Goodell as the new NFL commissioner during the NFL owners meeting on August 8, 2006 at the Renaissance Hotel in Northbrook, Illinois. (Photo by Jonathan Daniel/Getty Images)

NFL - Owner's Meeting - August 7, 2006

Oakland Raiders Al Davis at the NFL owners meeting to elect a new commissioner at the Renaissance Chicago North Shore Hotel in Northbrook, Illinois on Monday, August 7, 2006. (Photo by Al Messerschmidt/Getty Images)

Oakland Raiders Press Conference

ALAMEDA, CA - SEPTEMBER 30: Oakland Raiders owner Al Davis speaks during a press conference to announce the firing of head coach Lane Kiffin of the Oakland Raiders at thier training facility on Septemer 30, 2008 in Alameda, California. (Photo by Jed Jacobsohn/Getty Images)

Oakland Raiders Press Conference

ALAMEDA, CA - SEPTEMBER 30: Oakland Raiders owner Al Davis speaks during a press conference to announce the firing of head coach Lane Kiffin of the Oakland Raiders at thier training facility on Septemer 30, 2008 in Alameda, California. (Photo by Jed Jacobsohn/Getty Images)

Oakland Raiders Press Conference

ALAMEDA, CA - SEPTEMBER 30: Oakland Raiders owner Al Davis speaks during a press conference to announce the firing of head coach Lane Kiffin of the Oakland Raiders at thier training facility on Septemer 30, 2008 in Alameda, California. (Photo by Jed Jacobsohn/Getty Images)

St. Louis Rams v Los Angeles Raiders

OAKLAND, CA - AUGUST 12: Oakland Raiders owner Al Davis cracks a smile before the game against the St. Louis Rams at Oakland-Alameda County Coliseum on August 12, 1995 in Oakland, California. The Raiders won 27-22. (Photo by George Rose/Getty Images)

Denver Broncos v Los Angeles Raiders

OAKLAND, CA - DECEMBER 24: Oakland Raiders owner Al Davis looks on during the game against the Denver Broncos at Oakland-Alameda County Coliseum on December 24, 1995 in Oakland, California. The Broncos won 31-28. (Photo by George Rose/Getty Images)

London Monarchs v Sacramento Surge

SACRAMENTO, CA - MAY 18: Al Davis, owner of the NFL Los Angeles Raiders, shares a laugh with Sacramento Surge owner Fred Anderson at the Sacramento Surge game against the London Monarchs on May 18, 1991 at Hughes Stadium in Sacramento, California. The Monarchs won 45-21. (Photo by George Rose/Getty Images)

St. Louis Rams v Los Angeles Raiders

OAKLAND, CA - AUGUST 12: Oakland Raiders owner Al Davis stands on the field before the game against the St. Louis Rams at Oakland-Alameda County Coliseum on August 12, 1995 in Oakland, California. The Raiders won 27-22. (Photo by George Rose/Getty Images)

Greg Bell

OXNARD, CA - AUGUST 1990: Owner Al Davis of the Los Angeles Raiders watches a training camp practice in Oxnard, California during August of the 1990 season. (Photo by George Rose/Getty Images)

Oakland Raiders Promote Hue Jackson to Head Coach - Press Conference

ALAMEDA, CA - JANUARY 18: New Oakland Raiders coach Hue Jackson (L) poses for a photograph with Raiders owner Al Davis on January 18, 2011 in Alameda, California. Hue Jackson was introduced as the new coach of the Oakland Raiders, replacing the fired Tom Cable. (Photo by Justin Sullivan/Getty Images)

Oakland Raiders Promote Hue Jackson to Head Coach - Press Conference

ALAMEDA, CA - JANUARY 18: Oakland Raiders owner Al Davis speaks during a press conference on January 18, 2011 in Alameda, California. Hue Jackson was introduced as the new coach of the Oakland Raiders, replacing the fired Tom Cable. (Photo by Justin Sullivan/Getty Images)

Buffalo Bills vs Oakland Raiders - October 23, 2005

Oakland Raiders owner Al Davis watches the game from his box as the Oakland Raiders defeated the Buffalo Bills by a score of 38 to 17 at McAfee Coliseum, Oakland, California, October 23, 2005. (Photo by Robert B. Stanton/NFLPhotoLibrary)