No. 4 Northwestern 12, No. 6 Duke 11: In a game in which neither team led by more than a goal until nearly two-thirds of the way through, the Wildcats (2-0) went on a 4-0 run midway through the second half and held on to beat the Blue Devils (3-1).

Northwestern has won 11 straight against Duke dating to 2006.

Kaleigh Craig led Northwestern with a career-best four goals. Sydney Peterson (Notre Dame Prep) led Duke with a hat trick.

No. 10 Boston College 9, Ohio State 7: Sarah Mannelly scored the game-winner with 18 seconds left to lift the host Eagles (3-0) over the Buckeyes (2-2).

Covie Stanwick (Notre Dame Prep) scored six goals for Boston College.

No. 15 Notre Dame 8, No. 14 Stony Brook 7: Cortney Fortunato had four goals and the host Irish (2-1) withstood a late 3-0 run by the Seawolves (0-1).

Fortunato's fourth goal put Notre Dame up 8-4 lead with 20:55 left in the game.

No. 17 Penn 11, Delaware 8: Tory Bensen scored a career-high five goals to pace the host Quakers (1-0) past the Blue Hens (1-2).

No. 18 Stanford 14, Harvard 10: The Crimson (0-1) scored seven goals in the second half but fell to the Cardinal (2-0).

Alexis Nicolia and freshman Maria Romeo each had a hat trick.