Alicia's father recently purchased the RevFire. She had practice last night at the "Chicken House", an indoor facility, and they used the RevFire. Alicia's fast ball was 50mph and her screw ball was between 38 and 39mph. The RevFire also shows the spin rate of the ball. Alicia's spin rate was 16RPS.
A good breaking ball (curveball, riseball, dropball, or screwball) requires at least 19 RPS. Some pitchers
achieve more than 22 RPS consistently with their breaking balls. A few are known to throw riseballs
consistently at 30 RPS. In high school the best breaking balls pitchers typically throw around 23 RPS. There
is more variability in the spin rate on fastballs, depending on the type of fastball thrown and whether the
pitcher is trying to put movement on the pitch. Although the spin rates for fastpitch softball are slower than for
baseball, the effect of spin is more pronounced than with baseballs because of the larger surface area and
higher seams of a softball.
*High School data from National Fastpitch Coaches Association (NFCA) recruiting camps.
GENERAL GUIDELINE FOR JUNIOR & SENIOR YEAR HIGH SCHOOL PITCHERS*:
SPIN RATE (RPS)
17.0 – 18.9 Average
19.0 - 21.9 Good
22.0 and more Excellent
*This guideline is for high school pitchers without RevFire based training.
BREAKING BALL SPIN RATE GUIDELINE FOR DIVISION I COLLEGE FASTPITCH SOFTBALL:
SPIN RATE (RPS)
20.0 - 21.9 Average
22.0 - 24.9 Good
25.0 and up Excellent
Friday, October 16, 2009
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