FCS second-ranked James Madison (7-1, 4-0 Colonial Athletic Association) has won seven straight since its season-opening 20-13 loss at West Virginia.
DiNucci completed 23 of 36 pass attempts that included a 16-yard touchdown pass to Brandon Polk and a 37-yard score to Kyndel Dean.
Percy Agyei-Obese added a pair of touchdowns runs from the 1 in the second quarter for the Dukes, and finished with 68 yards rushing on 18 carries. Latrele Palmer added a 1-yard TD run in the final minute.
Ted Hefter tossed a 6-yard touchdown pass to Trey Zgombic for William & Mary (2-5, 0-3). The Tribe had three turnovers and was held to 194 yards of offense.
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