UTA went to 17-24 overall and 2-9 in Sun Belt 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.
UT Arlington lost 12-1 as the Mavericks dropped their final game of the San Diego Classic II Sunday morning.
The Mavericks drop to an even .500 (13-13) and are 0-2 in the San Diego Classic II.