The term “official betting” refers to a type of wager that is settled using official data from the sports league in question. Leagues have been pushing for such a data mandate in US sports betting markets since the fall of PASPA, but such a move would be unlikely to pass in Nevada where operators operate without official league data.

While the concept of official data as the one true source for grading all wagers is appealing to some, it seems unlikely to be commercially reasonable. Sources within the industry put the cost of official league data at 0.25% of total handle, which is roughly what the NBA has been asking for via distribution partner Sportradar. However, the value of that data remains a matter for operators and bettors to determine.

Massachusetts has eight legal sportsbooks in operation as of March 10 2022, including DraftKings, FanDuel, Caesars, Betr, WynnBET, ESPN Bet and Fanatics. Each has an app that offers a variety of promotions and bonuses, though the Caesars offering is somewhat clunky to navigate and sometimes fails to load properly. Despite that, it still ranks among the best apps for MA residents to use. The company is owned by entertainment and hospitality giant Caesars Entertainment, which also operates sportsbook apps in several other states. Click to read more about MA sportsbooks and their apps.