[citation needed] Stock also played catcher for Northwestern's baseball team and earned All-Big Ten honors in 1959.
After leaving the army, he worked for one year as an assistant coach at South High School in Akron, Ohio.
Stock's tenure as head coach of the Eastern Michigan Eagles football team is primarily remembered for his role in a school-record 27-game losing streak from 1980 through 1982, including a winless season in 1981.
In 1983, he coached offensive backfield for the New Jersey Generals of the United States Football League (USFL), mentoring running back Herschel Walker.
From 1987 through 1991 he coached special teams, then wide receivers, and finally tight ends for the Cincinnati Bengals of the National Football League (NFL.