The Thoroughbreds (1-3) trailed by just 14 at the break, but FNU (2-2) exploded for 50 points in the second half and held BLC to just 20.
Korey Harris led the Herd with 11 points.
Blue Lights completes action in the Eagle Classic by facing host Trinity Baptist on Saturday. Tip is set for 4:00pm. The game will be broadcast live at