[閒聊] 則本的問題.....已回收
則本先發時平常球速只有142~147
可能因為球速比較慢所以打者分不清變化球還是直球
後援每次都狂飆球速156
結果反而一出手就知道是直球還是變化球,被貓假的 XD
零速差反而比較難打
請問杜福明的速差理論是不是錯了?
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