Biggest Choke in NFL History

Sailors and Marines celebrate a touchdown during a screening of Super Bowl LI. Photo courtesy of the Official U.S. Navy Page on Flickr.
Super Bowl LI was the definition of “play till the clock hits zero.” At half the score was 21-3 in favor of the Atlanta Falcons. Going into the second half, the Falcons added to their lead with a touchdown pass from quarterback Matt Ryan to runningback Tevin Coleman, changing the lead to 28-3. In desperation, the New England Patriots responded with a touchdown pass from quarterback Tom Brady to runningback James White which cut the lead from 25 points to 19.
After that, the Patriots had the most remarkable comeback in Super Bowl history and sent the game into overtime [the first overtime Super Bowl in NFL history]. The Patriots won the coin toss and chose to receive the ball. Tom Brady led the New England Patriots to a 75 yard game winning drive.
With this win, Tom Brady surpasses Joe Montana and Terry Bradshaw in Super Bowl wins and ties Charles Haley with five.