This weekend the NASCAR Cup Series and Xfinity Series travel to Martinsville Speedway to set the field for the Championship 4 Playoffs. Cup Series winners Kyle Larson (Las Vegas Motor Speedway) and Christopher Bell (Homestead-Miami Speedway) have secured their spot in the Playoffs.
This weekend both the NASCAR Cup and Xfinity Series have their last race before the season ending championship race at Phoenix Raceway.
Martinsville Speedway, the oldest and shortest track on the schedule, will play host to the last chance for drivers to earn entry into the championship race.