PITCHf/x DATA

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BREW MATHsummary

  • PITCHf/x is a system developed by Sportvision and started in 2006. It uses two cameras to record the trajectory / spin of the ball from the pitcher’s hand to home plate.
  • The Following Pitch Abbreviations Are Commonly Used:
    • BREAKING
      • CB/CU = Curveball
      • KC = knuckle-curve
      • SL = Slider
    • FASTBALLS
      • FA = fastball
      • FC = fastball (cutter)
      • FF = four-seam fastball
      • FS / SI / SF = fastball (sinker, split-fingered)
      • FT = two-seam fastball
    • OFF-SPEED
      • CH = changeup
      • EP = eephus
      • KN = knuckleball
    • OTHER
      • UN / XX = unidentified
      • PO / FO = pitch out

Further PitchF/x Reading

If you would like to learn more about the subject, BREW MATHs recommends starting at Brooks Baseball. They track every game and present complex data in a straightforward way: Brooks Baseball PitchF/x Tool

If you’d like to become a PitchF/x Jedi, check out “Interpreting PitchF/x Charts” by FanGraphs.