On January 12, 1969, the New York Jets beat the Indianapolis Colts, 16-7, in a legendary Super Bowl III performance. To this day, it remains the biggest upset in Super Bowl history.
Super Bowl NFL odds at the time pegged the Jets as 18-point underdogs.'
The NFC had dominated the early merger period, so many NFL fans weren't willing to give the AFC much of a chance when the Jets and Colts met for Super Bowl III.
Joe Namath famously predicted a massive upset win for the Jets, and Broadway Joe delivered in a big way.