⬇️ Tips & A Story ⬇️ Thumb Tuck Fastball Story I had never heard of this until college, then one day I saw an article about big time pitchers doing my this. That day I tucked my thumb on my fastball, threw several innings of shutout baseball against U of Hawaii and literally never stopped. Some people can do this, some can’t, dependent on their hand size and thumb flexibility. But pitchers like Max Scherzer, Justin Verlander, Jacob DeGrom all tuck the thumb on their fastball. Tips ⬇️ Thumb Tuck

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