UTA fell to 18-26 and 3-10 in the Sun Belt Conference.
UT Arlington went to 17-24 overall and 2-9 in Sun Belt Conference play.
The Mavericks won the opener 3-1 before falling in the nightcap 6-4.
The Mavericks are looking for their first conference win as the face the Jaguars in a Saturday doubleheader starting at noon CT and again Sunday at 11 a.m.
UTA softball fell to 14-21 overall and 0-6 in Sun Belt Conference play.