Thank you for viewing. I think this is a great reference book when you're struggling with pitching instruction. No claims and no returns, please. Below is the AI product description at the time of listing: A book that explains techniques and methods for developing individuality, specializing in baseball instruction. - Title: Kotani's Pitching Instruction Theory - Author: Masakatsu Kotani - Publisher: Nikkan Sports Publishing - Theme: Baseball Instruction - Price: 1,500 yen Thank you for viewing.