Astros OF George Springer reportedly has setback after tweaking quad

Astros outfielder George Springer had a setback during rehab on Wednesday after tweaking his quad muscle while running the bases in a game for High-A Quad Cities in Iowa, according to a tweet Wednesday night from Evan Drellich of The Houston Chronicle.

Astros outfielder George Springer had a setback during rehab on Wednesday after tweaking his quad muscle while running the bases in a game for High-A Quad Cities in Iowa, according to a tweet Wednesday night from Evan Drellich of The Houston Chronicle. 

The 25-year-old, who made his MLB debut in April for the Astros, is now headed back to Houston for re-evaluation. He was set for a likely activation on Thursday but that remains up in the air as he undergoes further tests.

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Springer had been leading the Astros with 20 homers - one short of Lance Berkman's franchise record for a rookie -- when he was placed on the 15-day DL after initially going down with a strained left quadriceps at the end of July. 

The Astros are ahead of only the Rangers in the AL West heading into Thursday's series finale against the Phillies in Philadelphia. 

Springer heading back to Houston. Tweaked quad running on double in Iowa

— Evan Drellich (@EvanDrellich) August 7, 2014

- Marc Weinreich