City Councilor Annissa Essaibi-George has thrown her hat in the ring to succeed Marty Walsh as mayor. (Herald video by Meghan Ottolini)
More info on Annissa Essaibi-George launches run for mayor of Boston
Sports betting launches in Mass. at MGM Springfield, Encore Boston Harbor
Sports betting officially launched Tuesday morning with fanfare at two of the state's casinos — Encore Boston Harbor and MGM Springfield.