The senior scored with 39 seconds left to help the Terps remain undefeated against the Blue Jays.
The Terps struggled with draw controls in back-to-back losses to No. 2 Northwestern.
The Terps held Northwestern's leading scorers off the board in the first half.
The Terps will face the Wildcats as the lower-ranked team, a rarity for the series.
Colson and Griffin were pivotal in back-to-back wins over Ohio State.
The Terps have held opponents to single-digit goal tallies in four straight games.
The Terps held the Buckeyes to 22 percent shooting.
Colson led the Terps in ground balls, caused turnovers and draw controls against Johns Hopkins.
Leubecker scored four goals against the Blue Jays.
Lizzie Colson, Brindi Griffin and Grace Griffin received the honor.