How Does It Work?

FLUTTER PITCH INSTRUCTIONS
Place middle finger in CUPBALL

CURVE INSTRUCTIONS
Place forefinger over side of CUPBALL, open end, thumb on bottom

SCREWBALL INSTRUCTIONS
Grasp CUPBALL along side, forefinger near closed end

DOUBLE CURVE INSTRUCTIONS
Grasp CUPBALL along side, forefinger near open end

CHANGE UP INSTRUCTIONS
Place fore and middle fingers on edge of CUPBALL open end, thumb on bottom
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