He played all infield positions at one time or another, but mostly was a utility second baseman and third baseman. He became a coach for Minnesota in 1971 immediately after retiring as a player. The following year, at age 33, he was promoted to manager of the Twins on July 6, 1972. He managed the club through 1975, compiling a record of 280-287 (.494). Quilici had replaced veteran Bill Rigney as the Twins' manager. Another experienced skipper, Gene Mauch, succeeded him.