In 1984 , the Dolphins won their first 11 games en route to a 14–2 season (the franchise's best 16-game season to date). Marino, in his first full season, produced the most impressive set of passing statistics in NFL history, setting single-season records for most yards (5,084), touchdown passes (48), and completions (362). He was voted NFL MVP . Miami avenged the Seattle Seahawks 31–10 and crushed the Pittsburgh Steelers 45–28 in the playoffs to get to Super Bowl XIX . In the title game, however, Miami lost to the San Francisco 49ers 38–16. It would be Marino's only Super Bowl appearance and the Dolphins' last one to date.