Mat Rebeaus competes against Robbie Madison in the semi finals of the Red Bull X-Fighters.<br /><br /><br /><img src="http://ll.broadbandsports.com/images/37883_thumb.jpg" alt="MotoX - Mat Rebeaud - Red Bull X-Fighters Semi-Finals" title="MotoX - Mat Rebeaud - Red Bull X-Fighters Semi-Finals" width="150" height="90" alt="MotoX - Mat Rebeaud - Red Bull X-Fighters Semi-Finals"/>
