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Athletics offseason report: Promising faces but no stadium yet
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Why No Team Will Regret Trading for Half a Season of Manny Machado - The Ringer
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Jesús Luzardo - Wikipedia
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A's trade Sean Doolittle, Ryan Madson to Nationals
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Oakland A's 2018 Community Prospect List #6: Jesus Luzardo puts surgery in the rear-view mirror - Athletics Nation
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Sean Doolittle - Wikipedia
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Blake Treinen - Wikipedia
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Sean Doolittle Announces Retirement - MLB Trade Rumors
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Nats get Madson, Doolittle from A's for Treinen, prospects - WTOP News
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Oakland A's prospect watch: Meet trade acquisitions Jesus Luzardo and Sheldon Neuse - Athletics Nation