RCR loses appeal, penalties upheld for Dillon and No. 3 team

NASCAR took&nbsp;Dillon's car back to the R&D Center following the Cup race at Martinsville Speedway last month, and were later issued an L1 penalty.<br>After further inspecting the car, they found a violation relating to the 'Underwing Assembly Mounting & Underwing Stay Assembly Hardware' section of the rulebook. Dillon&nbsp;had finished 12th at Martinsville.<br>As a result, Richard ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/rcr-loses-appeal-penalties-dillon-upheld/10464266/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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