The No. 4-seed Terps will face the No. 5-seed Iowa Hawkeyes on Wednesday for a spot in the semifinals.
The Terps snapped a three-game losing streak and entered the Big Ten tournament on a high note.
The goal lifted the Terps to a weekend sweep of the Scarlet Knights.
All four Maryland goals resulted from penalty corners.
Scarlet Knights' coach Meredith Civico was one of the pieces to Maryland's 2005 national championship-winning side.
The Terps tallied 13 shots but were shutout Sunday.
Despite outshooting the Wolverines 13-6, the Terps couldn't find a goal.
Wolverines goalkeeper Anna Spieker made five saves.
The Terps had been tough to break down, conceding few chances in matchups against the Big Ten's best teams.
Anthe Nijziel's third-quarter goal started the scoring for the Hawkeyes.