Zach DeLoach and Logan Foster each had three hits for the Aggies (40-20), who are the No. 3 seed in Austin.
Luke Miller homered twice — solo shots in the seventh and ninth innings to give him 13 for the season — for second-seeded Indiana (38-18).
Foster’s two-out RBI single in the fourth started a seven-run outburst that DeLoach capped with a three-run double to chase Indiana starter Jonathan Stiever (5-6). Foster added an RBI triple an inning later.