Image Mike Alessi (Smartop MotoConcepts Racing) jumped out front early in the first 450 heat race, with James Stewart (Yoshimura Suzuki Factory Racing) not far behind. Credit GuyB Related: Supercross Supercross 2016 Photo Blast St. Louis Josh Grant Mike Alessi Vince Friese Weston Peick James Stewart Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 12 of 51Autoplay Autoplay SlowMedFast Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter GuyB 4/19/2016 4:03pm Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter