NASCAR Xfinity 500 takeaways: William Byron dominates at Martinsville; Kyle Larson fights through adversity to maintain title lead
With all eyes on the title fight and whether Kyle Larson could clinch the title one week early, William Byron put on a clinic to win his first race of the season in dominating fashion on Sunday at Martinsville Speedway. Here are four takeaways from the penultimate race of the…