A 47-point fury in the second half gave forced overtime but it wouldn't be enough as CMU falls to St. Edward's, 100-92.
This game was the Mavs' home opener and their first game of the D2 Conference Challenge.
Connor Nichols led the way for the Mavs with 27 points and nine rebounds. He also shot 9-15 from the floor including 2-4 from three-point range.
Landon Goesling led the Hilltoppers with 25 points in the win.
The Mavs will continue the D2 Conference Challenge on Saturday against Dallas Baptist at 7 P.M. from Brownson Arena.