![DT Pitching on Twitter: "As you can see I want my thumb to be in the middle of my two fingers underneath the baseball and not splitting the center mass. I also DT Pitching on Twitter: "As you can see I want my thumb to be in the middle of my two fingers underneath the baseball and not splitting the center mass. I also](https://pbs.twimg.com/media/EuzGnbMVEA0TO_q.jpg:large)
DT Pitching on Twitter: "As you can see I want my thumb to be in the middle of my two fingers underneath the baseball and not splitting the center mass. I also
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File:Mariano Rivera's cutter grip traced onto ball for Roy Halladay at Baseball Hall of Fame.jpg - Wikimedia Commons
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