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Castro improving, available to pinch-hit

Castro improving, available to pinch-hit play video for Castro improving, available to pinch-hit

ARLINGTON -- Astros catcher Jason Castro, who missed Monday's game with a mysterious pain in his left armpit, was improved Tuesday and did some hitting in the batting cage. Castro said he felt well enough that he was available to pinch-hit.

The cause of the pain still isn't known, even after Castro visited doctors Monday. He has been taking some anti-inflammatory medicine and some antibiotics, which seem to be working.

"I saw a few doctors yesterday and without getting into some in-depth testing, they can only guess to what it is," he said. "Everything seems pretty minor what their guesses are. They way I came to the field and felt today, it's really not worth trying to pinpoint it, I guess, just stick with what we're doing right and the progress."

The injury comes at a bad time for Castro, who was hitting .462 (6-for-13) in his last three games after getting moved into the No. 2 spot in the batting order.

"Hopefully, it won't be too much longer now," he said. "I'm pretty happy about the progress from yesterday to today."

Brian McTaggart is reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.

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