UTA recorded seven hits in the game that lasted just over two hours.
UT Arlington picked up its first series win since March 15 of this season when it defeated South Alabama.
UTA will wrap up the series on Sunday with a 1 p.m. rubber match.
A career high eight strikeouts by Chad Nack was not enough for the Mavs to claim a victory against the Eagles.
A five-run eighth inning helped propel the Mavericks to a 10-6 win over the Warhawks on Friday afternoon.