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

NASCAR took 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.
After further inspecting the car, they found a violation relating to the ‘Underwing Assembly Mounting & Underwing Stay Assembly Hardware’ section of the rulebook. Dillon had finished 12th at Martinsville.
As a result, Richard …Keep reading