Common Offensive Stats

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On-Base Percentage

OBP = H+BB+HBP / AB+BB+HBP+SF

  • Takes into account HITS & WALKS 
  • After about 500 plate appearances, a player’s OBP is a good predictor of what their future OBP will be
    • Prior to 500PA’s it is tough to put too much stock in

On-Base Plus Slugging

OPS = OBP + SLG

  • OPS+ is a more advanced version of this statistic; it takes into account ‘park effects’ & other minor factors
  • Drawback: OPS does not properly weight OBP & SLG (slugging is typically 1.6X higher)
    •  wOBA is superior to OBP

Batted Ball Direction

  1. Pull%
  2. Cent%
  3. Oppo%

Allows us to contextualize a hitter’s performance (i.e. are they a pull hitter?)

– There is not an ideal distribution here

Quality of Contact

  1. Soft%
  2. Med%
  3. Hard%

Started measuring in 2002 and is far from perfect.

– Based on hang time, trajectory and landing spot (exit velocity is not included)

– There is not an ideal distribution here

Pitch Values

AKA Pitch Type Linear Values

  • How well does a hitter do with a certain situation and / or pitch?
    • How well does a player hit the curveball?
    • Are they better in 1-0 or full counts?
  • A retrospective look at situational performance but not very predictive

PACE

  • How much time elapses between pitches
  • Used for both hitters and pitchers
    • No discernible relation to performance

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