The heaviest pitcher in MLB History is definitely Nolan Ryan.
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The first Japanese pitcher in MLB history was Masanori Murkami who played from 1964 to 1965 for the San Francisco Giants
Johan Santana
nope
He was a MLB pitcher from 1981-1989, pitched for 5 mlb teams.
The pitcher that struck out the most batters in history is Nolan Ryan. He has struck out 5,714 batters during his career from September 11, 1966 until September 22, 1993.