Roush first entered NASCAR competition in 1988, but had competed and won championships in various drag racing and sports car racing series since the mid-1960s.
Roush pertama kali memasuki persaingan NASCAR pada tahun 1988, tetapi sebenarnya tim ini sudah bersaing dan memenangkan kejuaraan di berbagai balap drag dan balap mobil sport seri sejak pertengahan 1960-an.