Christian Hollie recorded three hits with one triple and one double on Saturday.
The Mavs brought the tying run to the plate in the 9th before ending the game with a ground out.
The Mavs were outhit 11-5 in their six-run loss to the Cougars on Saturday afternoon.
UT Arlington will open up the 2015 season against Missouri State on Friday.
The Blue team led by Troy Dean Conkle claimed the victory in the Fall World Series 2-1.