It was his second in a row at this central Iowa race facility .
KNOXVILLE , IOWA - ( June 6 ) - Skip Jackson took his fourth feature event win of the season at Knoxville Raceway Saturday night .
IOWA was Skip Jackson 's second in a row at this central Iowa race facility .
KNOXVILLE , IOWA - ( June 6 ) - Skip Jackson took his fourth feature event win of the season at Knoxville Raceway Saturday night .