The Wildcats handed the Terps their first loss of the season.
For the first time in 22 games spanning 364 days, Giles was held scoreless.
The Terps are heading to their fourth straight Big Ten tournament championship game appearance.
The Terps take on Penn State in a rematch to open their Big Ten tournament.
Caroline Steele, Julia Braig and Jen Giles were unanimous selections.
“When you think of Maryland lacrosse, you think of Jen Giles,”
Boston College held the top spot the entire season.
“My confidence is building, getting used to everybody around me."
Saturday's win over Johns Hopkins secured the Terps' fifth straight Big Ten regular season title.
Erica Evans scored a game-high six goals in the regular-season title clinching performance.