The Tigers improved to 11-0 and will play host to John Overton next Friday while Harp, who announced his resignation last week after four seasons, prepares to return to his native Kentucky as an assistant coach and the Blue Devils, who went 1-10 this season and 6-36 in his four seasons, await their next coach.
Whitehaven led 13-0 following the first quarter and 34-0 at halftime.
Lebanon advanced as far as the Tigers’ 5-yard line late in the third quarter before Logan White ended the shutout with a 22-yard field goal to draw the Blue Devils within 41-3.
“We were just outmanned every way you can be outmanned,” Harp said. “They were a whole lot better than we were.
“Our kids played hard. We never were in the game. It looked like we had their guy bottled up, and then he found a crease and it looked like he was shot out of a cannon.”