Here are the weekly Racing America On SI NASCAR Power Rankings following Saturday night's Cook Out 400 at Richmond Raceway, which was won by Austin Dillon.

Richard Childress Racing had an eventful Cook Out 400, with Austin Dillon ... s incidents at Richmond Read More: Denny Hamlin Reacts to Potential All-Star Race Move to Dover Late in Stage 2 of ...

The only Joe Gibbs Racing driver yet to clinch a playoff spot, Ty Gibbs, suffered another setback at Richmond due to multiple factors.

Kyle Busch's Daytona playoff hopes hinge on a must-win race—can he save his season and secure a playoff spot this weekend?