Oakland University and Detroit Mercy are getting another league-mate.

Purdue-Fort Wayne is set to join the Horizon League, starting with the 2020-21 season, it was announced Tuesday morning.

This will be the second addition to the league in the last three years, after Indiana University-Purdue University joined for the 2017-18 season.

That will give the Horizon League 11 members.

"The Mastodons align with the Horizon League’s mission, vision, and core values and is located in the middle of our geographic footprintm," Horizon League commissioner Jon LeCrone said in a statement. "Their addition will bring competitive potential, especially in men’s basketball, and an engaged and vitalized community.

"Purdue-Fort Wayne is the right school at the right time.”

Purdue-Fort Wayne will give the league a second school in Indiana; the league headquarters are based in Indianapolis.

Indianapolis will be the host city for the men's and women's basketball tournament semifinals and finals starting in 2020, after a four-year run in Detroit.

Other league members include Cleveland State, Green Bay, Milwaukee, Northern Kentucky, Illinois-Chicago, Wright State and Youngstown State.

Purdue-Fort Wayne will wrap up its run in the Summit League in 2019-20, before making the move to the Horizon League. IUPUI also made the jump from the Summit League, which will be down to eight full-time members if it doesn't make an addition.

“I know our student-athletes, coaches, staff, and fans are bursting with pride and excitement as we begin the transition into a new League and new levels of competition,” Purdue-Fort Wayne athletic director Kelley Hartley Hutton said in a statement. “We are incredibly grateful to our donors and friends who have provided financial support to help offset the costs of transitioning to a new athletics conference.”

Purdue-Fort Wayne will have 15 Division I-sponsored teams when it moves to the Horizon League, including baseball. Only Purdue-Fort Wayne's men's volleyball team won't be joining the Horizon League; it will continue to compete in the Midwestern Intercollegiate Volleyball Association.

That's a significant development, because the Horizon League has been down to six baseball teams for several years, including Oakland. A league needs at least six baseball teams to qualify for an automatic bid into the NCAA Tournament.

Purdue-Fort Wayne joined the Purdue brand of schools in July 2018. The school features more than 10,000 students.

“A great league of great schools just got even stronger and more competitive,” Purdue president Mitch Daniels said in a statement. “Purdue-Fort Wayne will bring new fans, new visibility, and instant rivalries. It’s a good move for all concerned.”

Twitter: @tonypaul1984