NASCAR drivers Andrew Grady, Davey Callihan get involved in heated brawl during race at Martinsville Speedway

NASCAR drivers Andrew Grady and Davey Callihan were involved in a heated brawl during the ValleyStar Credit Union 300 at Martinsville Speedway on Saturday. Grady was seen attacking Callian while the latter was still in his car. Both racers were placed toward the bottom pole positions of Heat Race 1.