"In the second half, we made a few adjustments and came back out and started rolling. We got our act together and really put up some good numbers for the second half alone."
Dunn scored on runs of 58, 53 and 39 yards on his way to collecting 232 yards on 16 carries.
Two of his touchdowns came in the third quarter, when the Pioneers ran only three offensive plays.
Grant controlled the ball the rest of the quarter, but couldn't score again and had only 110 yards for the game. The Braves had 42 passing yards and 68 rushing yards.
The Braves scored their only points on the first drive of the second half. They drove to the Harrodsburg 20 before the Pioneers forced them to attempt a field goal.
"Mariqus Brown should have gotten there for the block, but he was held," Brown said.
"You can't say too much because the officials didn't call it, but that put them up."
Shane Webb had a two-point conversion on Dunn's first run, and Adam Grey kicked extra points on his other two.
Dunn's first two scores came on sweeps, and Keith Brown said Chris Sheron and the Harrodsburg receivers did their part by executing their downfield blocks. His third touchdown, however, was different than most that Brown has seen.
"Because of our numbers, it's usually been other teams wearing us down, but it almost seemed like we had literally worn Grant down in the fourth quarter," Brown said.
"We could sense they were getting tired. Mark simply went power off tackle, lowered his shoulder and ran. The offensive line picked up their blocks, Mark split the safeties and that was the end of it."
Harrodsburg had 325 yards of offense, 269 of it on the ground. Mariqus Brown was 5-of-7 for 56 yards.
Keith Brown also had high praise for the Pioneers' defense, as Harrodsburg had eight sacks and three interceptions.
The eight sacks came courtesy of eight different players, and three different players had picks.
Mariqus Brown had one of the picks in the fourth quarter after moving to strong safety to replace the injured Webb.
"He covered their big play receiver in man-to-man coverage, and just had a beautiful interception," Keith Brown said. "If he doesn't get the pick, it's possibly a big play for them, but he made a diving interception to save it."