Astros Who gets the call as rosters expand on Sept 1
Alvarez homers, Tucker surpasses 100 RBIs as Astros increase AL
Houston Astros prospects news, updates, & rankings - Climbing
Astros Who gets the call as rosters expand on Sept 1
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Houston Astros deliver a much-needed response vs. Texas Rangers
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2013 Astros September Call-ups: Jorge De Leon and Trevor Crowe
Who Will The Astros Promote Tomorrow?
3 star Astros prospects who must be on expanded September roster
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September callups and roster rules explained
Predicting 1 September Call-Up for Every MLB Playoff Contender
3 Astros players who won't be on the roster by September 1