2019 NCAA Division I baseball season

Finally, one other Division I team changed its institutional and athletic identities immediately after the 2017–18 season.

IPFW's academic programs in health sciences transferred to the IU system as Indiana University Fort Wayne; all remaining academic programs were transferred to the Purdue system as Purdue University Fort Wayne (PFW).

Shortly before the dissolution took effect, but after the school's baseball season had finished, the athletic program announced that it would henceforth be known as the Purdue Fort Wayne Mastodons.

[3][4][5] On October 3, 2018, Long Island University announced that it would merge its two current athletic programs—the LIU Brooklyn Blackbirds, members of the Northeast Conference (NEC), and LIU Post Pioneers, a Division II program in the East Coast Conference—into a single Division I program effective with the 2019–20 school year.

The teams in each conference that won their regular season title are given the number one seed in each tournament.