Barker retook the points - lead in Denver on a challenging Speedway track with a tough dirt section .
The National Amateur Championship with Monarch Honda 's Malcolm Barker sitting five points ahead of 53 - year - old Lee Schmidt .
Malcolm Barker retook the points - lead in Denver on a challenging Speedway track with a tough dirt section .
The National Amateur Championship with Monarch Honda 's Malcolm Barker sitting five points ahead of 53 - year - old Lee Schmidt .