The Astros are off to an unexpected start and are currently sitting in a tie for second place in the NL Central, with a 4-6 record.
A number of young prospects from last season have stepped up this year, including second baseman Jose Altuve and outfielder J.D. Martinez.
The farm system for Houston has been a joke for years, but thanks to Ed Wade, it has become respectable with a number of young players. Add in the youth movement the Astros are going with this year, and Houston could be calling up more than its fair share of prospects.
Here are the top five candidates to be called up this season.