(AP) - Resorts Casino Hotel and DraftKings have received approval to become the first companies to offer online and mobile sports betting in New Jersey.

The New Jersey Division of Gaming Enforcement gave approval Wednesday afternoon to the casino and its Boston-based online partner to launch an invitation-only version of mobile sports betting, which will undergo several days of testing before becoming fully available. Requests for invitations can be made at draftkings.com.

The companies won a heated race to be first to market with mobile and online sports betting, widely seen as the most promising segment of the nascent sports betting market.

New Jersey regulators are considering mobile applications from several other companies as well. Four casinos and two horse tracks currently offer in-person sports betting.

Harrah's became the fourth casino on Wednesday morning.