Eric Tate went 4-5 and drove in the go-ahead runs with a base-loaded single in the eighth inning.
The Mavericks return to Sun Belt action with a three-game series at Georgia State beginning Friday.
UTA won its fifth straight Sun Belt game to open the day, but lost the second in extra innings.
UT Arlington dropped to 7-15 overall and 0-4 in the Sun Belt Conference.
UT Arlington has won consecutive games for the first time since last May.