Massachusetts sports betting bills are flying, as a trio of bills were introduced by lawmakers on Wednesday. This after Governor Charlie Baker voiced his support earlier in the week. Separate documents that proposed legalizing online and retail betting, allowing only existing casinos to offer betting and the commissioning of a gaming impact study were filed ahead of Friday’s deadline for the 2019 session. The most ambitious of Massachusetts sports betting bills is SD 903 put forward by Sen Brendan Crighton, which would legalize both retail and mobile operations in Massachusetts. The state has a population of 6.9m, and is home…