Nagashima's appointment as manager of the Yomiuri Giants was announced almost immediately after his retirement. Nagashima was given control of the team in November 1974, and he immediately rid the Giants of the tactical, small ball style left by his predecessor Tetsuharu Kawakami, relying instead on superior hitting and pitching to carry the team. He also recruited third baseman Davey Johnson from the majors, who became the first ever non-Japanese player to play for the Giants. The changes did not turn out well in the 1975 season, as the Giants ended the season in last place for the first time in the team's history. However, the Giants recruited star players during the off-seasons, while Nagashima made further changes (including converting a lifelong outfielder to third base) and the Giants quickly re-assumed their dominant position in the Central League, winning league championships in 1976 and 1977.