Summary: Supercross from Detroit!<br> Major crash in the 250 final screws up some of the best riders.<br> Triumph has a less then triumphic debut. <br> Jett wins again!<br>
Summary: Supercross from Detroit!<br> Major crash in the 250 final screws up some of the best riders.<br> Triumph has a less then triumphic debut. <br> Jett wins again!<br>