It’s been a disappointing year for Kyle Busch. For the first time in 20 years, ‘Rowdy’ has been winless in the NASCAR Cup Series, despite coming agonizingly close on several occasions.

Nine-year-old Brexton Busch is now beginning to understand what that saying entails. As the son of Kyle Busch, one of NASCAR’s all-time greats, and with a championship pedigree that extends to ...