American football rules
Super Bowl LI was the first Super Bowl to go into overtime with a 28-all tie between the Atlanta Falcons and New England Patriots, which the Patriots eventually won with James White scoring a touchdown on the Patriots' first drive.
Miami Dolphins
The Dolphins dominated the New England Patriots during the 1970s and the 1990s, but there were some notable moments as well, including a game now known as the Snowplow Game. Fortunes changed when Tom Brady became the franchise quarterback for the Patriots, and since then, the Patriots have virtually dominated the AFC, especially the AFC East. Miami did pose more of a challenge to the Brady-led Patriots in the 2000s, however, winning more games against them than the Bills or Jets did during that decade. Miami and New England are also the only two franchises to have posted undefeated regular season records since the NFL-AFL merger, with Miami going 14–0 in 1972 and New England going 16–0 in 2007, but only the 1972 Dolphins were able to win the Super Bowl.