New Jersey’s mobile sports betting market is getting bigger as the NFL season gets closer.

The American affiliate of a major British bookmaker and a fantasy sports titan began offering mobile sports betting in New Jersey on Saturday night, joining that state’s rapidly expanding market.

William Hill US, which runs sports books at Atlantic City’s Ocean Resort Casino and the Monmouth Park Racetrack in Oceanport, and FanDuel, which operates the sports book at the Meadowlands Racetrack in East Rutherford, began a trial period of their mobile sports betting operations after receiving authorization to run a five-day testing period by the New Jersey Division of Gaming Enforcement.

Companies are pushing to get approved for mobile and online sports betting in time for the start of the NFL season.

The Borgata was the first New Jersey casino to offer sports betting beginning in June. It has since been joined by the Ocean Resort; Harrah’s; Bally’s; Resorts; and the Golden Nugget.

A court battle is underway regarding whether the former Garden State Park racetrack in Cherry Hill, New Jersey, can be used for sports betting as well.