Other states where sports betting is being offered include Nevada, Delaware, Mississippi, and West Virginia.
Pennsylvania missed the season’s kick-off. So far only Penn National Gaming along Interstate 78 near Hershey has applied for a license, but the state has said approval is unlikely before October.
Each of Pennsylvania’s 12 casinos is eligible, but must pay $10 million to operate sports betting, plus a 34 percent tax rate.
Bruce Deifik, who owns Atlantic City’s Ocean Resort Casino, was encouraged to see how full the new sports book was on Sunday. He said the casino is already seeing a ripple effect from people who come primarily to bet on football, but then stay for lunch or dinner and drinks, go to the spa or play in a golf simulator.
"In terms of bringing people into contact with other amenities — playing in the casino, food and beverage, maybe getting a hotel room and staying over, this is a big deal," he said.
Sports betting took in $40.6 million in wagers in New Jersey in July, the first full month it was legal.