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Halladay throws no-hitter in first postseason appearance
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Roy Halladay's widow donates ball from Mariano Rivera to Baseball Hall of Fame
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Baseball HOF Features Traced Baseball Which Mariano Rivera Used to Help Roy Halladay With Cutter
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Kiszla: The Hall of Fame life of Colorado pitcher Roy Halladay. Short, but as sweet as ice cream. – The Denver Post
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One baseball connects two 2019 Hall of Fame inductees
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Book Review - Doc: The Life of Roy Halladay, by Todd Zolecki - Cooperstowners in Canada
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200 wins and counting: Roy Halladay retrospective
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What Mariano Rivera Shared With Roy Halladay, Besides Hall of Fame Credentials - The New York Times
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Cano And A-Rod Talk Mariano Teaching Roy Halladay His Famous Cutter – The Washed Up Athlete
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Mariano Rivera looks back on teaching Roy Halladay his legendary cutter
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Reflections on the 10th Anniversary of Roy Halladay's Perfect Game
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Mariano Rivera, Roy Halladay Among 2019 Baseball Hall of Fame Inductees, News, Scores, Highlights, Stats, and Rumors
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When done correctly, cutter is effective