"I was very impressed," said Kiernan, a Scout.com three-star prospect. "They played really well, especially for a first game."
Prior to kick off, Kiernan also spent time enjoying the energetic atmosphere - which included a trip to the Denny Crum Overpass for the pregame CardMarch - at all of Louisville's home football games.
"I talked to some of the coaches and saw the facilities," he continued. "We got to go down on the field before the game, which was pretty cool."
With the exception of his two visits to Louisville, Kiernan hasn't made many visits during the past few months and doesn't have plans for many more this fall.
"I'm not sure yet really," he said of potential future trips. "I know I'm going to go somewhere during my bye week which is in October. I'll probably go down to Louisville again."
In addition to Louisville, Kiernan has also received scholarship offers from Kentucky and fellow Big East Conference member Cincinnati. Notre Dame remains in contact, as does Connecticut, Illinois and others.
With interest continuing to rise, the All-State performer says that he has no time frame for making an eventual college decision.
"I'm not sure yet," he explained. "It's all still up in the air."