Chase Rate
The percentage of pitches outside the strike zone that a batter swings at, lower is generally better, indicating superior plate discipline.
Example Usage
“Her low chase rate of 18% shows excellent plate discipline, she doesn't expand the zone.”
Chase Rate
Chase rate (also called O-Swing%) measures how often a batter swings at pitches outside the strike zone. A lower chase rate indicates better plate discipline and the ability to lay off pitcher's pitches.
Understanding Chase Rate
The Formula
Chase Rate = Swings at Pitches Outside Zone ÷ Total Pitches Outside Zone
What It Measures
- Plate discipline
- Pitch recognition ability
- Patience at the plate
- Resistance to pitcher's tricks
What's a Good Chase Rate?
| Chase Rate | Rating |
|---|---|
| Below 20% | Elite |
| 20-25% | Above Average |
| 25-30% | Average |
| 30-35% | Below Average |
| Above 35% | Poor |
Why Chase Rate Matters
For Hitters
- Lower chase = more walks
- Better counts to hit in
- Higher quality contact opportunities
- Longer at-bats, more pitches seen
For Pitchers
- Target high-chase hitters
- Expand zone with two strikes
- Throw more balls, get more swings
- Strategic advantage
Reducing Your Chase Rate
Recognition Training
- Study pitch tunnels
- Recognize spin early
- Take borderline pitches early in count
- Trust your eyes
Mental Approach
- Know your zone
- Have a plan each at-bat
- Don't chase with less than two strikes
- Stay disciplined behind in count
Physical Skills
- Quick hands allow later decision
- Better bat speed = more time
- Relaxed stance, clear vision
Related Terms
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.
Plate Appearance
Any time a batter completes their turn at the plate, regardless of outcome, includes at-bats, walks, hit by pitches, and sacrifices.
Count
The current number of balls and strikes on a batter, always stated as balls first, then strikes (e.g., '3-2 count' means three balls, two strikes).
Ready to Create Your Perfect Lineup?
Now that you know what “Chase Rate” means, put your knowledge to work with our free lineup generator.
Try Free Lineup Generator