Knoxville Hospital and Clinics Foundation Gala and Annual Night Out is this evening at the Knoxville Sprint Car Hall of Fame and Museum. The Annual Night Out theme this year is “Casino Night”, and tickets can be purchased at The Next Chapter, Eye Health Solutions or Knoxville Hospital and Clinics at 842-1418. There will be live entertainment by Heidi Feldman, a silent auction with many items to bid on, including a Vikings/Bears game in Minnesota; Iowa Wild tickets; a Coach purse, among others. Tickets are $75 and the event is semi formal.