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Pirates pitcher Mitch Keller's new weapon is a pitch that is sweeping through the majors - The Athletic
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Mitch Keller and starting pitching depth arguably the biggest keys to Pirates' success this season | Pittsburgh Post-Gazette
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Jason Mackey: Why Mitch Keller's resurgence involves more than what the Pirates pitcher throws | Pittsburgh Post-Gazette
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After strong July, might Pirates starter Mitch Keller finally be reaching his potential? | TribLIVE.com
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Pirates' Mitch Keller surprised even himself this year: 'I didn't expect to be the dude' - The Athletic
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