New England Patriots Spygate (2007)

Head coach Bill Belichick was fined a record $500,000—the largest individual penalty ever levied by the league—after video footage showed staff illegally filming opponents’ defensive signals from an unauthorized sideline position. The Patriots were caught in Week 1 against the Jets, and the NFL subsequently confiscated their videotapes and docked the team a first-round draft pick. Despite winning three Super Bowls before 2007, the scandal permanently eroded trust in their accomplishments, with critics arguing the competitive advantage gained over 40+ games could have been decisive. The fine and draft penalty, while severe, failed to fully address the systemic breach of rules that compromised the integrity of every opponent they faced.