» February 23, 1964:
The San Francisco Giants sign P Masanori Murakami, 3B Tatsuhico Tanaka, and C Hiroshi Takahashi -- the first Japanese ever to play for American teams. All three are assigned to the Magic Valley Cowboys (Pioneer League).
» September 1, 1964: Southpaw relief P Masanori Murakami becomes the first ML player from Japan. He debuts in a 4–1 San Francisco loss at New York. His first 11 innings will be scoreless ones.
» January 31, 1965:
Masanori Murakami, the first Japanese player
in the major leagues, says he will not return to the
Giants in 1965.
» February 17, 1965: Commissioner Ford Frick suspends U.S.-Japan baseball relations until the dispute over Masanori Murakami's contract with the Giants is resolved.
» April 29, 1965:
Masanori Murakami agrees to stay with the Giants in 1965 if he can return to Japan in 1966.
» May 4, 1965: Masanori Murakami arrives in San Francisco from Japan to rejoin the Giants as a relief pitcher, ending a bitter contract dispute between the Giants and his home team, the Nankai Hawks. Murakami will have a good season; appearing in 45 games, he wins four and loses one, saves 8, gives up 57 hits in 74 innings, fans 85, and walks only 22 while posting an ERA of 3.50.
» December 4, 1965: Masanori Murakami, 4-1 this year, does not renew his contract with the Giants, signing instead with the Nankai Hawks of Osaka for $40,000.