According to trash / gossip web site TMZ, former Oakland Raider owner Al Davis died of heart failure. According to the death certificate issued by Alameda County, Mr Davis died at age 82 at 2:45am on October 8th from an abnormal heart rhythm, congestive heart failure, and a heart muscle disease. Al died in the Oakland Airport Hilton, where he lived during much of the football season. Also according to the death certificate, Mr Davis had a form of skin cancer and had undergone throat surgery just 3 days prior to his death. He had also undergone heart surgery in 1996. Stay tuned to RAIDERSGAB for more on this story..