Austin Dillon appeared headed to an easy victory at Las Vegas Motor Speedway until four fresh tires helped Ryan Blaney chase him down. Blaney charged to Dillon's back bumper and stalked him around the track for the final four laps Saturday, but a bobble ruined his momentum and allowed Dillon to wrap up the Xfinity Series win. Dillon led 183 of the 200 laps, but Blaney made it hard for him to close out the rout. ''When you have something as good as this, you just don't want to mess it up,'' Dillon said. More...