Our own Jake Weimer was recently on the Re - Raceables Podcast by Pulpmx to talk about his very first Supercross win.
It went down in Phoenix 2008 just after missing the main event the weekend before at A1, injuring his shoulder, & not knowing if he would be able to line up for the race he went on to win.
Theres also a great bonus story about his Dad attaining a similar shoulder injury...
http://pulpmx.com/podcast/phoenix-sx-2008/
You can watch the race highlights below starting at the 3:30 mark.