Autopsy results were pending.
Martin was the posterchild for the venom the Packers felt toward the Bears under coach Forrest Gregg. While the Packers were among the dregs of the league, the Bears were coming off a Super Bowl championship during the 1986 season.
Martin wore a hit list during the game, but nobody took it seriously. A couple seconds after McMahon threw a pass, however, Martin picked the quarterback up and slammed him shoulder-first onto the turf. Martin was ejected and suspended for two games for the ugly incident, and McMahon's season — and the Bears' hopes for a championship repeat — were finished.
Martin played with the Packers from 1984-87, as well as the Houston Oilers in 1987 and Atlanta Falcons in 1988. He spent the 1983 season with the USFL's Birmingham Stallions.