Among Wisconsin's wins were three ranked victories over No 6.
The Arizona Wildcats softball team will host a regional at Hillenbrand Stadium for the second year in a row.
Arizona played 29 games against teams in the NCAA Tournament this season, going 16-13 against them.
The Tigers (28-27) are one of 13 SEC teams to make the tourney under interim coach Gina Fogue. The Hornets swept a pair of games with La Roche in 2017 and defeated Adrian and Marietta in the NCAA regional round in 2015 and 2016, respectively.
Hosting an NCAA regional has always been the goal for these Gamecocks. Friday's winners will play at 2 p.m. on Saturday while Friday's losers will play at 4:30 p.m.in an elimination game.More news: Iran diplomat visits China for talks on nuclear deal crisis
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Their opening-round opponent will be Bethany Lutheran College, who will be making its first-ever NCAA Regional appearance.
MI (43-11) is playing in the NCAA for the 23rd straight year and split games with Notre Dame (32-21) during the season. That contest is slated to be on May 18 at a site that is yet to be announced by the NCAA. Notre Dame split a pair of games with the then-No. A team OSU has seen twice this season, both ending in losses.
Randolph-Macon was ranked No. 1 in the NCAA's final South Region rankings Sunday. Notre Dame owns a 19-9 series edge against UIC, which has included five prior matchups in NCAA tournament play. The Fighting Irish took the rematch, 4-3, the following day.
The regular season has come to a close and all conference champions have been crowned. Juniors Cait Brooks and Ali Wester were selected as part of the ACC Championship All-Tournament Team following standout performances in Atlanta. The six-straight appearances matches a program best for the longest streak having reached the postseason.