Attackman Josh Dionne scored five goals, tying a career high, and four Duke players scored two goals apiece.
Midfielder Dakota Rohlin scored a hat trick for Jacksonville.
No. 4 Denver 14, Air Force 8: The visiting Pioneers overcame a 3-1 deficit to rout the Falcons in the season opener for both teams.
Attackmen Wesley Berg and Jack Bobzien turned in dominating performances for Denver with five and four goals, respectively, and midfielder Jeremy Noble added four assists. Attackman Tommy McKee had a hat trick for Air Force.
No. 10 Virginia 13, Richmond 12: The Cavaliers held on down the stretch of a back-and-forth game to beat the host Spiders.