Open Wheel 101 sat down with flagman Doug Clark at the National Sprint Car Hall of Fame & Museum in Knoxville, Iowa, during the 2019 Knoxville Nationals. 2019 marked Doug's final season flagging at Knoxville Raceway after over 30 years in its flag stand. Before his retirement, we sat with him for an in depth discussion, with guest commentary from fellow National Sprint Car Hall of Fame inductee and childhood friend, Doug Wolfgang. A special thanks goes out to videographer Kris Krohn, who captured some vintage photos and videos of Doug to include!