Authorities say a former NASCAR crew member broke the jaw of a team owner while they were arguing at Dover International Speedway. Dover police say 33-year-old Lawrence Hayden of Concord, North Carolina, and 56-year-old NASCAR Xfinity Series race team owner Jerry Hataway were arguing over Hayden’s employment Friday when Hayden began punching Hataway. Hataway was treated at the track before being taken to a hospital with a broken jaw. Hayden was charged with second-degree assault and issued a $500 secured bond. Dover hosted the OneMain Financial 200 XFINITY Series race Saturday, followed by the AAA 400 Drive for Autism Monster Energy NASCAR Cup Series race yesterday.