UT Arlington scored 18 runs while hitting .414 in the Sunday afternoon game.
Missouri State scored seven unanswered runs to take a 7-2 victory against UTA.
The Mavericks dropped to 16-23 overall and 8-9 in the Sun Belt Conference.
Eric Tate went 4-5 and drove in two runs in Saturday's victory at Georgia State.
The Mavericks return to Sun Belt action with a three-game series at Georgia State beginning Friday.