Sources say the reason why Kaaya slid was a combination of bad tape and questions about his personal makeup. Teams felt that Kaaya's junior year tape was very shaky, and as a result, he was graded in Day 3 for many. Kaaya demonstrated poor vision and mobility, which led to a lot of taken sacks. Teams also felt that Kaaya lacked leadership skills, and all teams want leaders at quarterback. Sources didn't like that Kaaya was very focused on his draft standing last fall rather than being focused on winning the next game for his team. All of those factors combined to Kaaya being a late sixth-round pick.
WalterFootball.com: Why the Slide?: Brad Kaaya