Alyssa Leonard, a draw-control specialist, needed just the first 29 minutes to net a single-game career-high four goals. Erin Fitzgerald, the team's top scorer this season, added three.
Only two weeks ago, Penn State had taken Northwestern to overtime before losing in the American Lacrosse Conference semifinals. But this game was more like the regular-season meeting, which the Wildcats won 11-3.
The Wildcats brought the "mercy rule" into play before halftime, getting the 10-goal lead that results in a running clock.
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Nine Northwestern players scored on a wide variety of plays – including three after brilliant passes, three by turning the net against hopelessly overmatched defenders and five on free-position foul shots.
Long Island University Post 7, Adelphi 6: Jackie Sileo broke the fourth and final tie by scoring the game-winner with six seconds left to lift the host Pioneers (19-0) over the Panthers (18-3) in an NCAA Division II semifinal at Stevenson.
Limestone 11, Rollins 10, 2OT: The Saints (20-1) had two goals in the final two minutes of regulation to force overtime and Jessie Aguglia netted the game-winner, an empty netter, with 1:13 left in the second overtime to win at Stevenson.
Chelsea Treat was shoved into the crease by the Rollins goalie, who got carded, setting up the game-winner.
The Saints face defending national champion LIU Post today at 3 p.m.
Mercyhurst 18, Limestone 17, OT: Deven Alves scored the game-winner with 2:56 left in overtime as the host Lakers (18-0) outlasted the Saints (16-2) in an NCAA Division II semifinal.
Mercyhurst scored twice in the final 58 seconds of regulation to force overtime. The Lakers advance to the title game to face Le Moyne next Sunday at 1 p.m. in Philadelphia.
Le Moyne 16, Adelphi 13: Andrew Chadderdon and Kevin Kelly each scored five goals to lead the third-seeded Dolphins (17-2) past the host Panthers (14-3) in an NCAA Division II semifinal.
Le Moyne led 7-6 at halftime.