Caesars Entertainment, Inc. (CZR) has announced a significant expansion of its mobile sports betting platform, Caesars Sportsbook, in Washington, D.C. This move comes just in three years after the company made history by opening the first sportsbook in a U.S. professional sports venue at Capital One Arena. The expansion allows sports fans aged 21 and older to access the Caesars Sportsbook app on iOS, Android or desktop district-wide, with exceptions for federal lands and areas surrounding other professional ...