Endorsed by Jim Rice and Mike Flanagan. Allows anybody to throw any type of breaking ball automatically. Throw like a fastball and it curves automatically like a curveball, screwball, sinker or slider. Allows any hitter to get unlimited amount of breaking
Endorsed by Jim Rice and Mike Flanagan. Allows anybody to throw any type of breaking ball automatically. Throw like a fastball and it curves automatically like a curveball, screwball, sinker or slider. Allows any hitter to get unlimited amount of breaking ball practice. Official size and weight.
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