KNOXVILLE, Iowa — It’s been an interesting season in the world of winged sprint car racing with a pair (World of Outlaws and High Limit Racing) of national touring series and more big races than ever.

But heading into the 63rd running of the NOS Energy Drink Knoxville Nationals at Iowa’s Knoxville Raceway, there are a half-dozen drivers who have established themselves as favorites to win sprint car racing’s premier event.

 

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