 From 1971 through 1973, Noren served on the coaching staff of Oakland A's manager Dick Williams, a fellow Pasadena High School alumnus and former minor league teammate.He was a member of the 1971 American League West Division champions, and then worked with two consecutive AL pennant-winners and World Series champions in 1972–73.When Williams resigned after the 1973 title, Noren remained on the Oakland staff of new manager Alvin Dark.