[1] He also served in the majors as chief assistant to St. Louis Cardinals vice president and de facto general manager William Walsingham Jr. during the late 1940s and early 1950s.
Baseball Reference lists him as having played from 1939–1941 in the lowest levels of the minors in the organizations of St. Louis' two MLB teams of the era, the Browns and the Cardinals.
Sisler spent 11 seasons, through 1965, in the Rochester post, navigating transitions when the Cardinals sold the team to a community organization and, then, in 1961, when the Red Wings ended their 33-year relationship with St. Louis and affiliated with the Baltimore Orioles.
Then, he accepted a new challenge when he returned to Columbus to take the executive reins of the Clippers when that franchise (now in the International League) moved to Ohio's capital from Charleston, West Virginia.
He spent 13 seasons (1977–1989) as the Clippers' general manager, with the team winning International League championships in 1979, 1980, 1981 and 1987 and Western Division titles in 1979, 1980, 1981, 1983 and 1984.