Matt Kenseth was having a stellar outing at Atlanta Motor Speedway on Sunday before a penalty and failure to acknowledge a black flag cost him.
After pitting on Lap 117 of the Folds of Honor QuikTrip 500, Kenseth was penalized for improper fueling. Crew chief Jason Ratcliff was arguing the call with NASCAR officials when the black flag was displayed.
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Kenseth, meanwhile, failed to pit when the black flag was up, even when the warning was issued that he would cease to be scored if he did not pit.