The Maryland Lottery and Gaming Control Agency ( MLGCA) investigates all online sportsbooks before approving them for licenses to ensure they are reputable, secure, financially stable, and treat customers fairly. Lawmakers took an open market approach to online sports betting in Maryland by making 60 licenses available, giving bettors no shortage of options. Maryland online sports betting launched on November 23 rd, 2022.īettors 21 or older can visit licensed online sportsbooks to place wagers on professional and college sports safely and legally. How Sports Betting in Maryland Became Legal.