In this week's Power Rankings powered by Mack Trucks, we focus on the top eight drivers heading to Martinsville -- a place where Brad Keselowski has won.

Heading into one of his best tracks, Kevin Harvick remains the top cowboy ahead of Texas in this week's Power Rankings powered by Mack Trucks.

In this week's Power Rankings powered by Mack Trucks, the top four gets a shake-up before heading to Kansas Speedway.

In this week's Power Rankings powered by Mack Trucks, Chase Elliott rockets into the top four before he attempts to follow-up last year's Charlotte Roval victory.

In this week's Power Rankings powered by Mack Trucks, Kurt Busch rockets into the top four after his massive victory at Las Vegas Motor Speedway.

In this week's Power Rankings powered by Mack Trucks, Kyle Busch moves up two spots while Kevin Harvick and Denny Hamlin stay steady at the top.

In this week's Power Rankings powered by Mack Trucks, Brad Keselowski leaps into the top three and might be firmly planting himself as a Championship 4 contender.

In this week's Power Rankings powered by Mack Trucks there is no change at the top after Harvick's Southern 500 win, but there is some shake-up in the lower ranks as Austin Dillon and Alex Bowman make moves.

After a hot streak coming into the 2020 NASCAR Cup Series Playoffs, is Hendrick Motorsports driver destined to race for a title in the Championship 4 at Phoenix? Power Rankings presented by Mack Trucks.

In this week's Power Rankings powered by Mack Trucks, Brad Keselowski jumps into the top four heading to Daytona International Speedway's regular-season finale.

In this week's Power Rankings powered by Mack Trucks, Kyle Busch tumbles and there's a new No. 3 heading into Dover International Speedway.

In this week's Power Rankings powered by Mack Trucks, Ryan Blaney rises and there's a new No. 1 heading into the Daytona International Speedway Road Course.