The Super Bowl is one of the biggest sports events in the world. Millions of people tune in to watch the NFL's two best teams battling it out for the Vince Lombardi trophy. Winning the Super Bowl is an unbelievable feeling, but losing it is excruciatingly painful. In this case, we will be looking back at some of the worst Super Bowl defeats in NFL history. 

15. San Francisco 49ers, Super Bowl XLVII (2013)

Joe Flacco celebrates after throwing a touchdown pass.

It was nicknamed the Harbaugh Bowl as is would see brothers John and Jim Harbaugh, coahces of the Ravens and 49ers, go head to head. The Ravens had a 28-6 lead in the third quarter until a power outage stopped the game for over half an hour. 

After the power outage, the 49ers fought back and went into the fourth quarter only down 34-29. Despite the 49ers having all the momentum, they missed several golden oportunities to take the lead and went on to lose the game 34-31, which would be San Francisco's first ever Super Bowl defeat. 

14. Carolina Panthers, Super Bowl XXXVIII (2004)

Tom Brady driving the Patriots down the field.

The Carolina Panthers scored 29 points on Bill Belichick's New England Patriots, which is the most points the Patriots had allowed all season. For most teams, that would probably be enough to win the Super Bowl, but not against this Patriots team.

With a minute and eight seconds remaining in the fourth quarter, the score was tied at 29 and it looked like the game would go into overtime. However, Tom Brady, who was only in his fourth NFL season, had different ideas. He lead the offense down the field to put kicker Adam Vinatieri in position to hit a 41 yard field goal to win the Patriots their second Super Bowl in three season. After the game, Tom Brady would be named Super Bowl MVP. 

13. Cinninati Bengals, Super Bowl XXIII (1989)

Joe Montana leading the 49ers down the field.

The Bengals lead in the fourth quarter 16-13 with about three minutes left in the game. With San Francisco pinned deep in their own half, their chances of winning looked unlikely, but they did have the NFL's best quarterback in Joe Montana.

Montana would lead the team 92 yards down the field in 11 plays, which concluded with a touchdown throw to wide receiver John Taylor with 34 seconds remaining. San Francisco would win 20-16 to claim their third Super Bowl title. 

12. Baltimore Colts, Super Bowl III (1969)

Johnny Unitas with the Colts during the game.

The game would go down as one of the biggest upsets in Super Bowl history. The Colts were NFL champions and seen as heavy favorites against the New York Jets, who were AFL Champions. However, the Jets, lead by quarterback Joe Namath, had other ideas. 

Just three days earlier, Namath quaranted that the Jets would win the Super Bowl and he would not disappoint. The Jets would defeat the Colts 16-7 to become the first AFL team to win the Super Bowl. 

11. Arizona Cardinals, Super Bowl XLIII (2009)

Santonio Holmes catches the Steelers game winning touchdown.

This game is mostly remembered for two iconic plays. The first one occurred before halftime when James Harrison intercepted Kurt Warners pass in the Steelers endzone and returned it 100 yards for a touchdown. The second one happened in the final minutes of the fourth quarter.

After the Cardinals had taken the lead with 2:37 remaining, the Steelers drove down the field and would score the game winning touch with 35 seconds left on the clock. Ben Roethlisberger's pass beat three Cardinals' defenders and was caught by widereceiver Santonio Holmes as the Steelers would win 27-23.

10. Tennesse Titans, XXXIV (2000)

Mike Jones tackle stops Kevin Dyson at the one yard line.

The conclusion of the game was something out of a Hollywood movie. The Titans came back from a 16 point deficit at one point in the game, but were down in the final minutes 23-16.

With six seconds left, Kevin Dyson caught the ball and looked sure to get in the endzone until he was tackled by Rams' defender Mike Jones. Dyson extended his arm all he could, but he was stopped at the one yard line and the Rams would win their first Super Bowl in franchise history.

9. Buffalo Bills, Super Bowl XXVII (1993)

Bills player on his knees after losing the Super Bowl.

The would be the Bills third of four straight Super Bowl losses. It was a tight game and the Bills looked to have a good chance of winning the Super Bowl. However, that all changed in the fourth quarters.

The Cowboys, led by quarter back Troy Aikman, scored 21 answered points in the fourth quarter as they would go on to win 52-17. Aikman completed 22 of 30 passes, throwing for 273 yards and four touchdown passes as he was named Super Bowl MVP.

8. Denver Broncos, Super Bowl XXII (1988)

John Elway during the Super Bowl.

After losing the Super Bowl the previous season, the Broncos looked to finally get over the hurdle as they searched for the franchise's first ever Super Bowl title. The game looked promising as the Broncos took an early 10-0 lead in the first quarter.

However, that would all change when the Redskins scored 35 points in the second quarter. The Broncos would not score another point and lost the game 42-10. 

7. New England Patriots, Super Bowl XLII (2008)

David Tyree and his famous catch.

The Patriots may have won six Super Bowl championships since the new millenium, but many experts believe that this was their greatest team during the Bill Belichick and Tom Brady era. They were undefeated entering the Super Bowl having finished the regular season 16-0 and were seen as heavy favorites against the New York Giants.

With the Patriots ahead and less than three minutes left in the fourth quarter, Eli Manning escaped the Patriots pass rush to complete a long pass to David Tyree, who caught the ball pressing it on his head. A few plays later, Manning would throw the game winning touchdown to Plaxico Burress with less than a minutes to go to win the game 17-14. It would be Bill Belichick and Tom Brady's first Super Bowl defeat as the Patriots would finish the season 18-1. 

6. Buffalo Bills, Super Bowl XXV (1991)

Scott Norwood field goal atempt.

It would be the closest game in Super Bowl history. In addition, it was the Bill's toughest defeat as they would go on to lose four straight Super Bowls. 

With the Giants leading 20-19 in the final seconds of the fourth quarter, kicker Scott Norwood had the chance to win it with a 47 yard field. However, his kick went just wide and the Giants would go on to win the Super Bowl. 

5. Denver Broncos, Super Bowl XLVIII (2014)

Peyton Manning leaving the field.

Even though the game was played between the league's best offense and defense, it would go on to be one of the biggest blowouts in Super Bowl history. Things looked bad from the beginning when miscommunication between quarterback Peyton Manning and his center lead to a Seahawks safety. 

From that moment on, the Seahawks did not let up and almost held the Broncos scoreless. The Broncas were able to at least score a field goal, but the Seahawks would win their first Super Bowl in franchise history by a score of 43-8.

4. Seatle Seahawks, Super Bowl XLVIX (2015)

Malcom Butler game winning interception.

The Seahwaks returned to the Super Bowl a year later, only this time to lose in dramatic fashion. The game was tight throughout and it came down to the final minutes. 

The Patriots were ahead 28-24 in the fourth quarter, but the Seahawks had the ball on the Patriots one yard line and looked like they were going to score. However, Patriots defender Malcom Butler would then intercept Russel Wilson's pass to win the game. This win would be the Patriots first Super Bowl championship since 2005. 

3. New England Patriots, Super Bowl XX (1986)

Chicago Bears players carry their coaches off the field.

The Patriots would be part of one of the biggest defeats in Super Bowl history. They started the game winning with a field goal on the first drive, but it was all Chicago Bears from that moment. 

The Bears hard nose defense was impossible for the Patriots to break through as the Bears' offense scored 31 points in the second and third quarter. The Bears would go on to win the game 46-10. 

2. Atlanta Falcons, Super Bowl LI (2017)

Patriots celebrating a touchdown.

An unbelievable comeback for the Patriots and an excrutiatingly defeat for the Falcons. The Falcons lead 28-9 entering the fourth quarter, but that would all change.

The Patriots, lead by quarterback Tom Brady, would score 19 unanswered points to tie the game and sent it into the Super Bowl's first ever overtime. In the overtime, the Patriots would complete the comeback when James White ran the ball into the endzone to win 34-28. 

1. Denver Broncos, Super Bowl XXIV (1990)

Joe Montana escaping the rush.

The biggest Super Bowl blowout in NFL history. John Elway was playing in his third Super Bowl with the Broncos and looking to win the franchise's first championship. However, they were big underdogs against the San Francisco 49ers, lead by quarterback Joe Montona.

San Francisco would not disappoint and completely ran over the Broncos. Montana had a remarkable game as they would go on to win 55-10.