The Tigers (7-5, 2-3 Ivy) scored first before the host Crimson (8-5, 4-1) got seven straight goals over 17 minutes. Princeton had seven goals over the rest of the game, including a game-high three from attackman Ryan Ambler, but Harvard broke up the rally with two goals, and the Tigers fell just short.
No. 13 Cornell 14, No. 16 Brown 9: The Big Red led 10-3 at the half, and the Bears' rally in the fourth quarter couldn't save them.
Attackman Matt Donovan scored four goals for Cornell (10-3, 4-1 Ivy), which remained tied with Harvard for first in the conference. Big Red attackmen Dan Lintner and John Edmonds each had a hat trick, as did attackman Dylan Molloy for Brown (6-6, 1-4), which scored four times in the final 4:31.
The Scarlet Knights (7-7) scored twice in each quarter, but Duke took a 6-2 lead going into the second period and later went on a six-goal run for a 16-6 edge with 14:13 left.
No. 3 Denver 14, Providence 6: Led by attacker Wesley Berg and midfielder Erik Adamson with four goals each, the visiting Pioneers (11-2, 5-0 Big East) outscored the Friars (3-11, 0-5) by 8-1 in the second half.
No. 4 Syracuse 15, Hobart 9: The host Statesmen (4-8) led 5-2 with 8:39 left till halftime, but attackman Randy Staats scored three straight goals to give the Orange a 6-5 edge at the break, and Syracuse (9-3) ran away in the second half.
Staats finished with five goals and three assists.
No. 8 Virginia 12, Bellarmine 8: A six-goal run spanning more than 22 minutes from the second quarter to the fourth helped the host Cavaliers (9-5) beat the Knights (6-5).
Bellarmine outshot Virginia 43-31, but Cavaliers goalkeeper Matt Barrett made 13saves.
Wiley Osborne had two of the Big Green's three goals.
No. 12 Hofstra 11, Massachusetts 6: The host Minutemen (7-5, 1-3 Colonial Athletic Association) scored the first goal of the second half to tie the game at four, but the Pride (10-3, 4-0) outscored UMass 4-1 over the last 30 minutes to win.
No. 14 Yale 13, Michigan 7: Coming off a three-game winning streak, the Bulldogs (8-3) dealt the host Wolverines (4-10) their sixth straight loss with a scoring advantage in each of the first three quarters.
Yale led 10-4 going into the final period.
No. 20 Saint Joseph's 21, Sacred Heart 9: Attackmen Michael Rastivo and Ryan McGee each had four goals for the Hawks (10-3, 5-0 Northeast Conference), who led 12-3 at halftime against the visiting Pioneers (5-8, 3-2).
Mount St. Mary's 9, Wagner 5: The host Mountaineers took a 5-2 halftime lead on their way to their first win of the season.
Attackman Mark Hojnoski led the Mount (1-14, 1-4 Northeast) with three goals against the Seahawks (2-10, 0-5), and goalkeeper Chris Klaiber made 15 saves. Mount St. Mary's won 14 of 15 faceoffs.
Midfielder Ben McCarty (South Carroll) responded for the host Tigers (8-5, 2-3) to make it 9-5, but Drexel had three more scores, answered by one each from attackman Ryan Drenner (Westminster) and midfielder Justin Mabus before the Dragons scored the last goal. Mabus finished with three goals.
Towson's Tyler White made eight saves.
Washington College 13, Gettysburg 8: The Shoremen secured the Centennial Conference's top tournament seed with their first win against the visiting Bullets in their past 16 meetings.
Paced by attackman J.D. Campbell (Mount St. Joseph) and midfielder Grant Hughes with four goals each, Washington College (12-1, 7-0 Centennial) went on a 3-0 run in each of the first three quarters to pull away from Gettysburg (8-5, 3-2).
Ursinus 12, McDaniel 6: The Green Terror (6-8, 3-4 Centennial) led 4-3 at the half, but the host Bears (7-6, 3-3) scored seven straight goals to take a 10-5 lead.
Each team had 17 shots in the first 30 minutes, but Ursinus outshot the Green Terror 28-10 after the break.
Frostburg State 17, St. Mary's 10: The Bobcats never trailed against the Seahawks, whom Frostburg State will play again Wednesday in the first round of the Capital Athletic Conference tournament.
The host Bobcats (12-4, 4-3) led 4-2 before St. Mary's (7-9, 3-4) narrowed the deficit to 6-5 at halftime. But Frostburg State outscored the Seahawks 11-5 in the second half.