The St. Louis Cardinals are expected to promote shortstop Ryan Jackson from Triple-A Memphis today to take the roster spot of Tyler Greene, who was traded to the Houston Astros yesterday, reports Derrick Goold of the St. Louis Post-Dispatch.

To take Tyler Greene's spot on the major-league roster, the Cardinals will promote shortstop Ryan Jackson on Friday from Class AAA Memphis.

Jackson is expected to join the team in Philadelphia.

The 24-year-old Jackson, known more for his defensive prowess than offensive repertoire, is hitting .269/.333/.398 with twenty-three doubles and ten home runs at Triple-A this season.

The 2009 fifth-round draft pick has moved steadily through the Cardinals' farm system and will serve as a third option at shortstop behind the oft-injured Rafael Furcal and Daniel Descalso. Jackson may also see time at second base as his predecessor Greene saw nearly all of his starts at the position.

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Where do you expect Jackson to get most of his playing time?

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