Preview: Martin, Musquin battle for Pro Motocross championship in series finale (Today, Live Extra) By Shawn SmithAug 22, 2015, 10:40 AM EDT Leave a comment Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Flipboard (Opens in new window)Click to share on Reddit (Opens in new window)Click to email this to a friend (Opens in new window) At the end of the day, a champion will finally be crowned in the 250 Class. [more]