Team Logo. The Knoxville NightHawks were a team in the Professional Indoor Football League. They had the worst record in the league in both of their seasons. They folded in 2013. Retrieved from "https://prosportsteams.fandom.com/wiki/Knoxville_NightHawks?oldid=14497" Categories: PIFL Teams Teams in Tennessee Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.