![Baseball Hall of Fame: How Roy Halladay perfected his cutter](https://preview.redd.it/o9bobulw4kc31.jpg?auto=webp&s=9b861420e4e464a4a8a6e171da22a48983bed41b)
Halladay's Induction Display at the Hall of Fame : r/Torontobluejays
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When done correctly, cutter is effective
![Baseball Hall of Fame: How Roy Halladay perfected his cutter](https://static01.nyt.com/images/2019/01/21/sports/21kepner1/merlin_147079170_97282889-656d-4810-acab-1e43ec5d0f7d-articleLarge.jpg?quality=75&auto=webp&disable=upscale)
What Mariano Rivera Shared With Roy Halladay, Besides Hall of Fame Credentials - The New York Times
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File:Mariano Rivera's cutter grip traced onto ball for Roy Halladay at Baseball Hall of Fame.jpg - Wikipedia
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How Mariano Rivera's tear-filled nights set up lasting Latino baseball legacy – New York Daily News
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Cano And A-Rod Talk Mariano Teaching Roy Halladay His Famous Cutter – The Washed Up Athlete
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Roy Halladay: Hall of Fame looks likely for late pitcher
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One baseball connects two 2019 Hall of Fame inductees
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Why Roy Halladay Deserved to be a First Ballot Hall of Famer - Cooperstown Cred