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.
History of the New England Patriots
The Patriots came out with the #2 seed in the AFC. The Patriots were given the bye week before they had to face the Houston Texans in a rematch of the previous Week 14 matchup. The Patriots were the highly favored team in that game, and ultimately won again, 41-28. But they had to face the Baltimore Ravens in a rematch of the previous year's AFC Championship. Despite the Patriots leading 13-7 at halftime, the Ravens scored 21 unanswered points in the second half to win 28-13. The Ravens would go on to win Super Bowl XLVII against the 49ers.