
19. San Diego Chargers vs. Denver Broncos (2013)
The Chargers pulled off one of the biggest upsets of the last decade when they defeated the Broncos. Denver had an incredible home defensive record at the time. Furthermore, opposition teams found it difficult to put pressure on Peyton Manning. San Diego came into this game with a 7-7 record but they weren’t as bad as their record suggested.

Denver’s defense was in decline after a season of toil. Also, their offense was the only one with a better record than the Chargers’ that year. But it was second-best on the day as San Diego won 27-20 (via New York Times). Philip Rivers was accurate and calm with his passes. They took their time and allowed time to drift by as they held the ball. It was an ingenious tactic that worked perfectly against the Broncos.