He won three championships (1966, 1968, and 1969) and every year he was active he ran the full schedule in NASCAR's Grand National Series (now Monster Energy NASCAR Cup Series).
Ia memenangkan tiga kejuaraan NASCAR (1966, 1968, dan 1969), setiap tahunnya ia mengikuti seluruh jadwal balapan di Seri Grand National NASCAR (sekarang dikenal dengan nama Seri Piala NASCAR Monster Energy).