The visiting Harvard men's lacrosse team scored six goals in the third quarter to upset No. 2 Cornell, 14-9, on Saturday.
The Crimson took sole possession of first place in the Ivy League with the win.
Will Walker scored two of his game-high four goals during the run after a 6-all halftime score. John Hogan (St. Mary's) led the Big Red (9-1, 3-1) with three goals.
Harvard (6-4, 3-0) can clinch a spot in the Ivy League tournament with one victory in its final three conference games.
No. 3 Duke 15, No. 9 Notre Dame 7: Deemer Class (Loyola) had five goals and two assists to lead the visiting Blue Devils (10-2, 3-1 Atlantic Coast Conference) past the Fighting Irish (4-4, 2-2).
"I give all the credit to my teammates," Class said.
Duke extended its winning streak to six games; it owns a share of the top spot in the conference standings with No. 6 Maryland.
No. 5 North Carolina 11, No. 7 Virginia 10: The host Tar Heels (9-2, 2-2 ACC) scored twice in the final 2:33, including R.G. Keenan's game-winner with 2:28 left, to beat the Cavaliers (8-4, 1-3).
Steve Pontrello tied the score at 10, setting up Keenan (Boys' Latin), who won the faceoff and scored five seconds later.
Saint Joseph's 9, No. 11 Bryant 7: The host Hawks (8-3, 4-0 Northeast Conference) finished strong with a 3-1 run in the fourth quarter to upset the Bulldogs (9-3, 2-1).
No. 12 Fairfield 9, Michigan 8: Drew Federico scored his second goal to give the Stags (9-2, 2-0 Eastern College Athletic Conference) a 9-7 lead with 2:12 left as they held on to beat the host Wolverines (4-8, 1-2).
No. 13 Penn 10, No. 15 Brown 8: The host Quakers (5-3, 2-2 Ivy) broke a 7-all tie by scoring three straight in the fourth quarter to beat the Bears (6-4, 1-2). Kylor Bellistri had three goals for Brown. Penn had a two-goal efforts from Nick Doktor, Pat Berkery and Alex Blonsky.
No. 14 Army 8, Boston University 7: The Black Knights (7-3, 5-1 Patriot League) went up 8-4 with 14:36 left in the game and withstood a 3-0 rally by the host Terriers (1-9, 1-5).
John Glesener led Army with two goals and two assists.
No. 16 Hofstra 7, Siena 6: Korey Hendrickson scored four goals, including the game-winner with 1:05 left, as the host Pride (7-3) beat the Saints (6-4).
No. 17 Yale 16, Dartmouth 10: Shane Thornton had three goals as the visiting Bulldogs (6-3, 2-2 Ivy) won their second straight. The Big Green (1-6, 0-3) led 3-2 after the first quarter, but Yale went on a 4-0 run to close out the half.
No. 20 Princeton 15, Rutgers 11: Ryan Ambler had five goals as the host Tigers (5-4) beat the Scarlet Knights (7-5) to capture the Harland Meistrell Cup.
No. 3 Syracuse 18, Virginia Tech 4: The visiting Orange (12-1, 4-1 ACC) jumped out to a 14-1 lead at halftime and was never threatened. Meghan Macera (Westminster) scored twice for the Hokies ( 7-6, 0-4).
No. 4 Boston College 13, No. 9 Duke 11: Covie Stanwick (Notre Dame Prep) and Sarah Mannelly each scored five goals to lead the Eagles (10-3, 2-3 ACC) past the host Blue Devils (8-5, 2-3).
No. 17 Albany 15, Vermont 7: Ariana Parker scored five goals, and the Great Danes (10-1, 2-0 America East) held a 10-3 lead over the Catamounts (10-3, 1-1) at halftime.
Jessica Roach had four goals for Vermont.
No. 20 Virginia 13, 8 Notre Dame 8: Liz Colgan (Notre Dame Prep) made 16 saves to anchor a tough Cavaliers defense that held the Fighting Irish (8-5, 1-4 ACC) to one goal in the first half.
Kelly Boyd (St. Paul's) and Maddy Keeshan each had three goals for Virginia (7-6, 1-3).