And they’re off!

Empire State bettors placed their first wagers on pro sports games Tuesday, as legal sports betting got underway more than a year after it was approved by the Supreme Court.

Gamblers at the Rivers Casino near Schenectady noshed on hot dogs and sipped spiked seltzers as they plunked down bets on the New York Yankees, Seattle Mariners and tennis phenom Varvara Lepchenko.

“It’s not like Vegas, but it’s good for upstate New York,” one attendee said.

“I bet the Yankees to win the World Series, I bet 20 bucks,” said Schenectady resident Scott “Scooter” Reynolds, 40, as he sipped a Truly spiked seltzer.

Reynolds admitted he was betting on pro sports illegally before the rollout, but couldn’t give the odds on sticking to the straight and narrow now that legal sports betting is a go.

“It all depends on if my bookie decides to keep going,” he said. “I know a few bookies, and I know a couple of them said as soon as this opens, they’re going to shut down, because it’s just not worth it anymore.”

Sports betting is expected to raise tens of millions of dollars a year in tax revenue that was previously unreported by off-the-books bookies. But proponents say the state is losing out on millions more, because bets can only be placed at four upstate casinos — rather than online and via mobile phone as is allowed in New Jersey.

“We’re going to get mobile sports betting before the middle of next year, it just has to be, because right now New Jersey is cleaning our clock when it comes to sports betting,” said Assemblyman Gary Pretlow (D-Mount Vernon), who dropped $20 on the Mariners’ matchup with Oakland tonight. “I think New York should always be at the forefront of everything and right now we’re a little bit behind them.”

Rivers is the first of the four upstate gambling parlors to roll out legal sports betting following the Supreme Court’s decision to strike down a ban on the practice last May.

The state voted in 2013 to allow such gambling should the high court ever reverse the ban — but it still took more than a year before Albany let risk-takers lay down their first bets.

Gaming is expected to get underway at Tioga Downs on Friday, though a spokesman said the casino hasn’t yet gotten the final OK from state regulators.

It was unclear when the other two approved casinos — Resorts World Catskills and the Del Lago Resort & Casino in Waterloo — would take their first bets. The state Gaming Commission has to inspect and sign off on their gambling facilities first.