Jennifer Brann allowed no runs and one hit while striking out seven in 4.1 innings.
The Buckeyes scored six runs in the fourth inning.
The Terps beat Ball State, Tulsa, Florida International and Samford.
The Terps took three of their four games at the Eagle Round Robin.
The Terps struck first but couldn't hang on.
Montgomery led Louisiana Tech to 30 or more wins in each of the past five seasons.
The Terps are slated to take on Pittsburgh and Clemson in February.
The Terps had their best start since 2015, but results began falling off in Big Ten play.
The Terps closed their season with eight straight losses.
After qualifying for the conference tournament last year, the Terps won't finish in the top 12 this season.