Pirates' Mitch Keller has confidence and another new pitch. Will he be the Opening Day starter? - The Athletic
Tim Benz: Pirates' Mitch Keller fixing shortcomings he identified
Pirates Prospects Daily: Mitch Keller Struggles Continue Against Oakland Athletics - Pirates Prospects
After strong July, might Pirates starter Mitch Keller finally be reaching his potential?
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Pirates' decision to lift Mitch Keller after 6 innings goes awry against Diamondbacks - The Athletic
