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Roy Oswalt announces his retirement : r/baseball
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Houston Astros pitcher Roy Oswalt loses to Cincinnati Reds for the first time since 2006
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Dealing Roy Oswalt was catalyst for Astros' rebirth
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Roy Oswalt announces his retirement : r/baseball
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Deals Of Days Past: Your Astros Trade History Primer - SB Nation Houston
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Before he became one of pro baseball's best, Roy Oswalt was already a legend in Weir - Mississippi Today
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Lance McCullers Jr. key to Astros' bullpen
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Poll: Who's Going To Win The World Series? - MLB Trade Rumors
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Roy Oswalt announces his retirement : r/baseball
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Peavy has five teams in mind; Padres expanding potential - ESPN
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Roy Oswalt says Astros have potential for a dynasty