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 Baltimore Ravens
The Ravens and New England Patriots played for a spot in the Super Bowl. After a close 3 quarters which saw the ball being turned over several times, Tom Brady leaped over the goal line on a 4th and 1 to put the Patriots ahead 23–20. After another couple of turnovers on both ends the Ravens marched down the field with under a minute to go. Joe Flacco threw a pass to Lee Evans with 38 seconds left, who appeared to catch it for the winning touchdown but the ball was knocked out by Patriots defensive back Sterling Moore, resulting in an incomplete pass. After Joe Flacco threw a dropped pass to Lee Evans, Billy Cundiff came out onto the field with 15 seconds to go to try and tie the game up with a 32-yard field goal. The kick went well to the left of the Patriots' goal post, and New England advanced to Super Bowl XLVI for a rematch with the New York Giants in Super Bowl XLII.