The Tommies, who previously secured a spot in the Summit League for all but three of their 22 varsity teams, will join the Pioneer League for football and the Western Collegiate Hockey Association for women's hockey.
The St. Thomas Tommies, who were expelled from a Division III conference in May for "competitive" reasons, have received an invitation to join the Summit League in Division I.
St. Thomas was involuntarily removed from the MIAC because its dominance had upset the competitive balance in the league.
Mount Union is back on top of Division III football, and coach Vince Kehres finally has one of his own.
Mount Union answers with juggling TD
Mount Union got a juggling TD catch of their own tonight, as Lane Clark bobbled the ball but stayed with it for the score to tie St. Thomas in the Division III title game on ESPNU.
St. Thomas' 4th-down gamble becomes TD
John Gould scrambled out of trouble then hit Nick Waldvogel for a 58-yard TD to give St. Thomas the lead over Mount Union in the Division III title game on ESPNU.
Mount Union ties score in D-III title game
Roman Namdar made a nice grab in the back of the end zone for a 29-yard TD as Mount Union has come back from a 14-0 deficit to tie St. Thomas late in the second quarter on ESPNU.
Dowdle shows soft hands, nimble feet on TD
St. Thomas' Charlie Dowdle made a juggling catch and got a toe in bounds just in time, after instant replay, for a 24-yard TD and a 7-0 lead over Mount Union in Division III title game on ESPNU.
Watch: D-III title game: Mt. Union-St. Thomas
Two of the most prolific offenses in Division III square off as Ohio's Mount Union seeks its 12th national title as it faces Minnesota's St. Thomas in a rematch of the 2012 championship game. Live on ESPNU, WatchESPN
Saint John's and St. Thomas meet again this weekend. Division III's top rivalry is like Alabama-Auburn with Minnesota Nice and will get the spotlight Saturday.