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Mariners excited to see what Luis Castillo can accomplish with full season in Seattle, Mariners
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Trade Central: Reds Trade Luis Castillo To Mariners For Prospect Haul — College Baseball, MLB Draft, Prospects - Baseball America
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Luis Castillo trade grades: Mariners, Reds both receive 'A' for deadline's first blockbuster
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Luis Castillo traded to Mariners by Reds for 4 prospects
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Reds trade ace Luis Castillo to Seattle Mariners
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Luis Castillo 'ready to go' for first start with the Mariners, Sports
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Why Mariners did and didn't make certain moves at MLB trade deadline
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Reds acquire 4 prospects from Mariners for Luis Castillo
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Reds trade Luis Castillo to Mariners for 4 prospects
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Mariners acquire Reds All-Star pitcher Luis Castillo in trade - Los Angeles Times
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Luis Castillo trade details: Mariners acquire Reds ace for top-end prospects
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The Seattle Mariners trade for Luis Castillo, make bid for postseason - Lookout Landing
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Luis Castillo traded to Mariners by Reds for four prospects