Rules

Strike Zone

The three-dimensional area over home plate between the batter's knees and the midpoint of their torso, pitches passing through this zone are strikes.

Example Usage

The pitch caught the outside corner of the strike zone for a called strike three.

Strike Zone

The strike zone is the three-dimensional area over home plate where a pitch must pass to be called a strike. Its size varies based on the individual batter's stance and is determined by the umpire's judgment.

Strike Zone Boundaries

Horizontal (Width)

  • The width of home plate: 17 inches
  • Ball must cross any part of the plate
  • Includes the black edges (usually)

Vertical (Height)

  • Top: Midpoint between shoulders and top of pants
  • Bottom: Bottom of the kneecap
  • Changes based on batter's stance

Depth

  • Front edge of home plate to back edge
  • Ball can catch any part of the zone
  • Not just a flat plane

Strike Zone Variations

By Umpire

  • Each umpire has tendencies
  • Some favor inside, others outside
  • High or low preferences
  • Consistency is key

By League

  • MLB vs. college vs. youth
  • Slightly different standards
  • Electronic strike zones changing MLB

By Batter

  • Tall batters have larger zones
  • Crouching can reduce zone size
  • Stance affects call

Working the Strike Zone

For Pitchers

  • Paint the corners
  • Expand with two strikes
  • Establish zones early
  • Use all quadrants

For Hitters

  • Know your zone
  • Don't chase outside it
  • Understand umpire's zone
  • Protect with two strikes

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