After his playing days, he became owner of Billy Williams' Men's Boutique in
Oakland, California. Williams spent eleven seasons coaching in the Cleveland Indians organization. In 1990 and 1991, he served as an MLB
coach under Tribe skipper
John McNamara. From 2000 to 2004, Williams coached hitting and third base, while also working with outfielders and base runners for the
Sioux Falls Canaries. He became
hitting coach for the
American Association of Independent Professional Baseball's
Sioux City Explorers in 2005, serving as
interim manager for the last month of the season. Williams’ managerial record was 44–52. In his final season with the Explorers, 2009, he served as bench coach. ==References==