Will Register padded his points lead Sunday night by winning the hobby stocks feature race at Double-X Speedway in California, Mo.
The Sedalia resident took the lead on lap nine and never trailed again. A.J. Wirts, who led for three laps early, finished second.
Register holds a 16-point lead over Wirts in the point standings. His lead over Wirts was only four points following the June 22 races.
Harlan Dowell Jr., of Tipton, won the street stocks final, and Vance Wilson, of Quincy, Ill., won the United Late Models race.