The Terps have dropped five of their last six contests.
With the Big Ten tournament looming, the Terps are clinging to their eighth-place conference ranking.
The 7-foot-2 Marial is eligible to play for the 2019-20 season.
The Wolverines racked up 13 runs on 11 hits.
A five-run seventh inning pushed the Wolverines too far in front.
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.