By Mike HughesHAYS, Kan. (July 16-17) – Brian Herbert pulled off a sweep in the annual Wheatshocker Nationals at RPM Speedway during the Ellis County Fair races.In the Sunday night United Rebel Sprint Series main event, Jed Warner looked to have the $2,000 winner’s check in sight. Warner took the lead from Koby Walters on the second lap of the 30-lap event.Warner pulled away following a lap four restart and continued to lead at the halfway mark. With four laps to go, Tracy Hill came to a stop to bring out a caution. Herbert, who was running second, took advantage on the restart and shot to the lead and held on for the win. Walters finished second, followed by Luke Cranston, Darren Berry and Mike Peters.Herbert had inherited the win on Saturday after John Carney failed post-race tech. Zach Blurton, Warner, Walters and Cranston rounding out the top five.Feature ResultsSaturday – 1. Brian Herbert; 2. Zach Blurton; 3. Jeff Warner; 4. Koby Walters; 5. Luke Cranston; 6. Darren Berry; 7. Keefe Hemel; 8. Lance Davis; 9. John Webster; 10. Steve Richardson; 11. Kaden Taylor; 12. Jeff Radcliffe; 13. Kris Moore; 14. Tracy Hill; 15. Austin McClean; 16. Ryan Walters; 17. Jeremy Huish; 18. Nate Berry; 19. Mike Peters.Sunday – 1. Herbert; 2. Walters; 3. Cranston; 4. Darren Berry; 5. Peters; 6. Jake Bubak; 7. Blurton; 8. Ty Williams; 9. Jed Warner; 10. Hemel; 11. Webster; 12. Huish; 13. Richardson; 14. Hill; 15. Radcliffe; 16. John Carney II; 17. Davis; 18. Nate Berry; 19. J.D. Johnson; 20. Taylor Velasquez.