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Which outcomes did Robert McCracken’s DIPS theory say pitchers can control most directly?

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According to the Defense Independent Pitching Statistics (DIPS) theory developed by Voros McCracken, pitchers have the most direct control over three specific outcomes:

  • Strikeouts1
  • Walks1
  • Home runs1

McCracken’s theory posits that once a batter puts a ball into the field of play, the resulting outcome is largely independent of the pitcher's skill and is instead influenced by factors such as luck and defensive performance.1