Three-time and defending SuperClean Knoxville Nationals champion Donny Schatz (shots) will unveil his third brick in as many years, on the Wall of Champions at the National Sprint Car Hall of Fame & Museum Saturday at . Sources tell KNIA/KRLS News the ceremony will begin at 4:00 pm and is being held in conjunction with the World of Outlaws race event, Saturday night, at the Knoxville Raceway.