The round of 8 of the NASCAR Cup Series playoffs is set to conclude this Sunday afternoon with the Xfinity 500 at Martinsville Speedway. Two spots remain open in the 2023 NASCAR Cup Series Championship 4 at Phoenix Raceway after Hendrick Motorsports’ Kyle Larson won the round of 8 opener at Las Vegas Motor Speedway […] NASCAR: Why isn’t Martinsville being shown on USA Network? - Beyond the Flag - Beyond the Flag - Your #1 Destination for Motorsports News and More