Image Shane McElrath charged deep into the first turn to take the top spot at the start of the 250 main. Credit GuyB Related: Monster Energy Supercross Photo Blast Arlington Supercross 2017 Killian Auberson Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 33 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