Career
He recorded over 40 home runs for five years in a row from 1977. With 536 home runs, he is fourth on the NPB career list. After graduating from high school in Hiroshima, Yamamoto was admitted to Hosei University in 1965.
Although he originally joined its baseball club as a pitcher, he was later converted to outfielder by the team manager who saw higher potential in Yamamoto at battalion
Thus he came to be known as the "Hosei Trio", together with Kōichi Tabuchi and Masaru Tomita. Starting 1977, he logged over 40 home runs for five consecutive years, which is in Japan a record paralleled only by Sadaharu Oh as of 2010.
In 1993, however, he resigned from his post after delivering the team the last place in the league which it had not seen since 1974. 1st play on April 12, 1969.
1st hit on April 13, 1969
1st home run on May 14, 1969.
Hitting for the cycle (April 30, 1983). Most Valuable Player in the Japanese Central League (1975 and 1980). Best nine of the year (1975, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984 and 1986).
Japan All-star game (1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 and 1986)
Hiroshima Prefectural Prize of Honour (1987).
536 Human Resources, 1475 Reserve Bank of India, 2339 H and 231 Bachelor of Science.