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Football Sports Betting NFL Biggest NFL Point Spread Upsets in History: The Full Ranking Last Updated: August 24th, 2026 2:35 pm PDT The biggest NFL upsets are proof that any team can win on any given Sunday. Just when you think you know how a game will play out, the underdog can flip the script and deliver an upset that sends shockwaves throughout the league. From regular season rallies to Super Bowl stunners, these games prove that […]