Tyler Blohm struck out six batters and the Terps allowed one hit.
After taking the first game Saturday, Maryland struggled on the mound in game two.
“This is a push in the right direction, and we’re just going to keep it going.”
The Terps beat the Rams for the third time this season.
Ridge Winand hit two home runs for the Buckeyes.
The Terps combined for 36 hits between both games.
The Terps fell behind in the first inning for the fourth straight game.
Right-hander Sean Heine was tagged for five runs in the first inning.
It's the third time Costes has earned the award this season.