McCray threw a 13-yard score to Kenneth Womack for a 7-0 lead early in the first quarter, and later, an 8-yard touchdown toss to Naseim Brantley for a 17-3 advantage.
The Pioneers (3-3, 1-1 Northeast Conference) outgained Merrimack 418-204 in total yardage with 334 coming on the ground. Grant averaged nearly 10 yards per carry as he toted it 27 times.
Westin Elliott threw for 176 yards and a touchdown for Merrimack (3-2, 0-2). Merrimack ran the ball 30 times for 15 yards.
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