Former Cambridge High School boys’ golf coach Brent Nottestad says he’s disgusted with himself for tweets he admitted were racist. The tweets criticized NASCAR driver Darrell Wallace, Junior, who will become the first full time African American driver since 1971 in the top NASCAR series when he replaces Aric Almirola next year. Nottestad, who coached for four years at Cambridge, said there were 14-hundred-23 more credible drivers than him — a number used as a reference to a white supremacist group although the former coach said he had no intention to insult Wallace that way. The school district said it was alerted to Nottestad’s tweets last week, and he resigned when officials met with him. He says he’ll reach out to Wallace soon, but not expect him the coach to forgive him.