Bella Goodwin, who scored six goals Tuesday, runs for the ball.
Liv Hovde and Emma Jackson clinched the doubles point for Duke on court 3.
Duke will have a tough time getting out of its region, especially with South Carolina standing in the way.
Duke will host No. 15-seed Lehigh in the first round of the NCAA tournament.
Duke will begin its NCAA Tournament journey in Durham later this week as a No. 2 seed.
No. 37 Mac Christmas became the first pole to score multiple goals in a game since the 2010 NCAA quarterfinal.
Duke attacks a ground ball in its match against St. Josephs.