Shigeo Nagashima was a Japanese professional baseball player and manager. Nagashima first began playing baseball in elementary school, before playing at his high school in Chiba Prefecture, part of Kanto Region, just before he played as a third baseman for Rikkyo University. After winning the batting title for two straight years in Tokyo Big6 Baseball League, Nagashima made his professional debut in 1958 with the Yomiuri Giants. In his rookie season, he led the Central League in home runs and runs batted in, with 29 and 92 respectively and ultimately received Rookie of the Year honors. With the arrival of Sadaharu Oh in 1959, the two would both become a dual force in being the best hitters in the game that earned the nickname "O-N Cannon" for one of the most dominant dynasties in NPB history, and Nagashima won league MVP five times while being named to the Best Nine Award in every season he played; his four Japan Series MVP award wins is still the most in NPB history. After retiring in 1974, he became as a manager of the Giants from 1975 to 1980, and again from 1993 to 2001; during this time, he won the Japan Series twice.
