Major League Baseball is in the middle of its longest expansion drought since the league first expanded in 1961. MLB has not added any new teams since the Arizona Diamondbacks and Tampa Bay (Devil) Rays joined the league in 1998,

The idea unquestionably would create one of the biggest shake-ups in baseball and likely end the long-standing format that MLB has operated under for more than 100 years.

MLB commissioner Rob Manfred told a national TV audience that expansion likely would be tied to reshuffling leagues and divisions to ease travel.