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Red Sox No. 29 prospect Zach Penrod strikes out the side during a perfect relief outing for Triple-A Worcester
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Red Sox prospect Zach Penrod strikes out the side to kick off a 10-strikeout outing for Double-A Portland
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Red Sox prospect Zach Penrod strikes out his 10th batter in the top of the 5th during his six-inning start for Double-A Portland
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Red Sox left-hander Zach Penrod records his eighth and final strikeout across of the game for Double-A Portland
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Red Sox farmhand Zach Penrod notches his eighth and final K over six scoreless for High-A Greenville