Lyle Martin Alzado (April 3, 1949 – May 14, 1992) was a professional American football defensive end of the National Football League famous for his intense and intimidating style of play. He played 15 seasons, splitting his time between the Denver Broncos, the Cleveland Browns, and finally the Los Angeles Raiders, with whom he won a championship in Super Bowl XVIII. Alzado died after a battle with brain cancer in 1992 at the age of 43.