 BetMGM will roll out its sports betting app in D.C. citywide next week. Currently, it only operates at Nats Park. FanDuel replaced D.C.'s own faltering GameBet D.C. earlier this year. D.C. has opened up sports betting to as many as eight operators to generate more tax revenue. And if Thursday is open on Wall Street, the Dallas Futures are down 47 points. Jeff Clayball, WTOP News.