After winning Olympic gold, Grewal turned professional and signed with the Panasonic team and later with the 7-Eleven Cycling Team. According to teammate Bob Roll, Grewal was the captain of the 1986 7-Eleven team through the spring.
After securing Olympic gold, Grewal embarked on a professional cycling career and partnered with Panasonic before joining the 7-Eleven Cycling Team. As teammate Bob Roll notes, Grewal held a leadership position with the 1986 7-Eleven team throughout its spring season.