LOUISVILLE, Ky. (AP) – David Johnson scored 17 points, including a free throw with 6.6 seconds left, and Louisville withstood a missed 3-pointer at the buzzer, holding off No. 19 Virginia Tech 73-71 in a matchup of unbeaten ACC teams. The Cardinals led 47-33 early in the second half before Tech fought back to within 72-71 on Keve Aluma’s two free throws with 6.6 left. Johnson missed the second of two free throws to give the Hokies a final chance, but Hunter Cattoor’s long 3-point attempt bounced off the rim as time expired. Jalen Cone had 23 points for the Hokies.