Last race: Ty Gibbs used a two-tire call on his final pit stop to edge Christopher Bell at Iowa Speedway for his second series victory of the season. Online: http://www.nhra.comWORLD OF OUTLAWSNOS ENERGY DRINK KNOXVILLE NATIONALS PRES. BY CASEY’SNOS ENERGY DRINK KNOXVILLE NATIONALS PRES. BY CASEY’SNOS ENERGY DRINK KNOXVILLE NATIONALS PRES. BY CASEY’SNOS ENERGY DRINK KNOXVILLE NATIONALS PRES.