Bubba Wallace fighting “slippery slope of self-doubt”

For the second week in a row on the NASCAR Cup Series, driver Bubba Wallace experienced self-inflicted issues that ruined his day. And the 29-year-old 23XI Racing pilot expressed difficulty dealing that reality. On Sunday in the EchoPark Automotive Grand Prix at the Circuit of the Americas in Austin, Texas, the No. 23 Toyota was involved in an incident that ultimately resulted in an early end to his day and a 37th place finish. That issue came one week after Wallace spun without contact from any other car on lap 10 at the Atlanta Motor Speedway then tagged the inside…