Joudon Townsend had a pair of TD catches and a career-high 109 yards receiving for the Fightin' Blue Hens (3-0, 1-0 Colonial Athletic Association).
Delaware, ranked 10th in the coaches poll, broke the game open with a 28-point second quarter to lead 35-7 at halftime, scoring touchdowns on five straight possessions on drives of at least 75 yards to end the half.
All four of Henderson's TD passes came in the first half including a 65-yarder to Townsend, a career long for the receiver.
Gabe Sloat had a 65-yard TD run on his lone carry for 14th-ranked Rams (2-1, 1-1).
Delaware outgained the Rams 610-303 and had two takeaways.
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