Answered January 12th, 2020

Since 1950, Randy Johnson has the most strikeouts * hit batsmen per walk allowed when pitching at least 1000 innings, with 618.74.

most so*hbp/bb in a career 1000 ip since 1950
Interpreted as:
most so*hbp/bb by a player in a career 1000 or more ip since 1950

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