Missouri Sports Fans Can Now Register on the Caesars Sportsbook App Share In preparation for legal sports wagering going live in the Show Me State on Dec. 1, players can now register and fund their account to enjoy a special offer on the Caesars Sportsbook app LAS VEGAS--(BUSINESS WIRE)--Caesars Entertainment, Inc. (NASDAQ: CZR) ("Caesars†) today announced that sports fans 21 and older in Missouri can now register and fund their Caesars Sportsbook mobile app accounts ahead of the state's official sports b ...