In August 2021, the company launched its sports wagering betting app in Illinois as Caesars by William Hill and hasn’t looked back since. Prior to launching in Illinois, the operator has also launched its online sportsbook and/or sports betting mobile app in Nevada, Michigan, Iowa, Indiana, Colorado, West Virginia, New Jersey, Virginia, and Tennessee. William Hill already runs several physical sportsbooks in Rhode Island, Michigan, Mississippi, Iowa, Indiana, Colorado, West Virginia, New Jersey, and Nevada. Here in the US, William Hill operates in conjunction with Caesars Entertainment, one of the most trusted casino operators in the country and across the globe. The globally recognized bookmarker has been in the sports betting games since 1934. Trusted and well-established operator brand: Most bettors outside of the US, especially punters in Europe, will be instantly familiar with William Hill. Caesars by William Hill Sportsbook Illinois Highlights The Caesars Entertainment-owned sportsbook has a reputation for reliability, competitive odds, an eclectic range of betting options, and a refined mobile app backed by a trusted betting brand. William Hill Sportsbook Illinois was launched in August 2021, becoming the 5th sports betting app to go live in the state. William Hill (Illinois) – Expert Review & Sign Up Bonuses