Image Mike Alessi (Smartop MotoConcepts Racing) nailed the start in the second 450 heat, and led until just before the halfway point. Credit GuyB Related: Cooper Webb Davi Millsaps Justin Bogle Malcolm Stewart Mike Alessi Monster Energy Supercross Photo Blast Arlington Supercross 2017 Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 15 of 56Autoplay Autoplay SlowMedFast Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter GuyB 2/13/2017 5:51pm Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter