The National Football League season kicks off Thursday when the Buffalo Bills visit the defending Super Bowl champion Los Angeles Rams.

Five years ago, only people in Nevada could have placed a legal wager on the outcome. Soon, bettors in 35 states and Washington, D.C., will be able to get some action down on pro football, European soccer, mixed martial arts and more.

That’s how quickly sports betting has exploded across the country since May 14, 2018, when the U.S. Supreme Court issued a ruling allowing states to decide whether to offer legal wagering.