The Tigers fell 63-55 in a quick turnaround game on the road at Buckhorn this past Friday afternoon.
Hartselle trailed 26-22 at halftime and 41-40 heading into the fourth quarter.
Dunn led the Tigers (1-1) with a game-high 14 points, along with two assists and two blocks. Kiah Key added 11 points and seven rebounds, while Kohl Key had 10 points. Thomas Itsede added six points and nine rebounds before leaving the game early in the fourth quarter.
Carter Milares led Buckhorn (2-0) with 13 points. Terrance Robinson had 12 points, while Jeremiah Wilson and Fred Derrick added 11 points each.