In October 1929, Zamloch and two others, A. Robert Miller and Victor Devincenzi, purchased the Oakland Oaks baseball team in the Pacific Coast League from J. Cal Ewing for a price estimated to be close to $500,000. As part of the acquisition, it was agreed that Zamloch would leave his position with the University of California and take over as the manager of the Oaks. His resignation as a coach at the university was accepted in early December 1929.
