Detalye ng Bola
Also known as: softball specs, 12-inch ball, softball size
Hinihingi ng standard na slow-pitch softball specifications ang bolang 12-pulgadang circumference na may defined na COR at compression rating. Karaniwang gumagamit ang mga men's at co-ed na liga ng 12-pulgadang bola; gumagamit ang ilang senior at mixed na liga ng 11-pulgadang bola.
Ang COR ng bola (bounciness) at compression (tigas) ay regulated ng sanctioning association at dapat tumugma sa approved ball list para sa event. Karaniwang recreational na standard ang 0.44 COR / 375-compression na bola; maaaring gumamit ng 0.52 COR na mga bola ang mas competitive na mga liga. Ang cover ay karaniwang polyurethane o katad na tinahi sa ibabaw ng polyurethane foam at cork center. Dahil ang bola ang pinakamalaking single na performance variable — mas malayo lumilipad ang mas matitigas na bola — ang paggamit ng maling bola kahit may certified na bat ay maaaring mangahulugan ng hindi patas na bentahe o disbentahe.
Ask your league coordinator what official ball spec is used and practice with the same ball to calibrate your swing for the correct carry distance.
In competitive leagues, understand your ball's COR and compression. This means a 52/300 ball in a confined field plays very differently than a 44/375 ball, affecting your power zone targeting.
Example
Nagdala ang team ng 0.52 COR na mga bola sa 0.44 COR na liga; napansin ito ng opposing captain at inutusan ng umpire ang team na gamitin ang league-supplied na 0.44 balls sa natitirang bahagi ng laro.
How it shows up on video
Ball specifications affect flight traits visible on any hit. This means a 12-inch softball with standard COR (coefficient of restitution) travels differently than a 11-inch or high-COR ball. Leagues often use different compression ratings (40, 52, 44) that affect how far the ball carries on a well-struck drive.
Common mistakes
- Practicing with a different compression ball than what the league uses, creating mismatched swing adjustments
- Not accounting for ball wear during play — older, deformed balls behave differently than fresh ones
- Ignoring that ball specifications vary by association and division, affecting fielding strategy and fence distances
- Assuming all 12-inch softballs are interchangeable when COR and compression ratings differ by a lot
In SwingVantage Motion Lab
SwingVantage can track exit velocity and distance metrics with self-reported ball specifications to help contextualize performance differences across league equipment standards.
Related terms
- COR (Koepisyent ng Pagbaton)Sinusukat ng COR (Coefficient of Restitution) kung gaano karaming enerhiya ng impact ng bola ang ibinabalik bilang rebound energy. Ang bolang may 0.52 COR ay tumatalbog nang 52% ng papasok nitong bilis mula sa isang rigid na ibabaw — kung mas mataas ang COR, mas buhay at mas malayo ang lipad ng bola.
- Rating ng CompressionSinusukat ng compression rating kung gaano karaming puwersa ang kailangan para i-compress ang softball nang isang-kapat na pulgada, sa libra. Ang mas mataas na compression ay nangangahulugang mas matigas na bola na mas mabilis na bumabalik mula sa bat — at karaniwang naglalakbay nang mas malayo sa maayos na tinamang contact.
- Guwantes – Slow-PitchAng slow-pitch softball glove ay naka-size para sa mas malaking 12-pulgadang bola — karaniwan ay 12 hanggang 13.5 pulgada para sa mga infielder, hanggang 14 pulgada para sa mga outfielder — na may mas malalim at mas malapad na pocket kaysa sa baseball glove.
Related guides & benchmarks
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See a sample Slow-Pitch Softball report first