
William Byron dominates at Martinsville Speedway in the Xfinity 500 while Kyle Larson is one step closer to back-to-back NASCAR Cup Series championships.
MARTINSVILLE, Va. – William Byron claimed his first victory of the season in Sunday’s NASCAR Cup Series Xfinity 500 at Martinsville (Va.) Speedway, and his Hendrick Motorsports teammate Kyle Larson put himself in prime championship position with one race to go in the 2026 season.
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