Last year’s Super Bowl winners, the Kansas City Chiefs, will be playing against the Philadelphia Eagles. If a Chiefs–Eagles Super Bowl sounds familiar, that’s because it is. Just two years ago, the two teams competed in Super Bowl 57,

No one knows exactly how much money is bet on the Super Bowl, but it’s a lot — more than $10 billion, according to estimates, much of it illegally. The most common way to bet is through the point spread (Kansas City is a 1 1/2-point favorite, meaning they must win by at least 2 points for bettors backing them to cash in).