Image 250 points leader, Alex Martin (Yamalube Star Racing Yamaha) was off to a good start, and was in fourth. Credit GuyB Related: Photo Blast Thunder Valley MX Nationals Pro Motocross Championship 2016 Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 3 of 43Autoplay Autoplay SlowMedFast Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter GuyB 6/6/2016 9:59am Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter