Masonius tallied her first double-double of the season and tied her season high with 15 points for the Terps. She played 37 minutes and was a team-high plus-34.
The Terps advance to Saturday's Big Ten tournament semifinal, where they'll play the winner of No. 4 seeded Michigan State and No. 5 seeded Nebraska at 2 p.m. EST.
While depth has been an issue for the Terps throughout the year, their role players excelled on Thursday to help the team advance to the conference tournament quarterfinal.