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Gregerson (oblique) will throw off of a mound Wednesday, Evan Drellich of the Houston Chronicle reports.

Gregerson has lagged behind most of the Astros' other pitchers this spring as he battles soreness in his left oblique. He took part in fielding activities Monday and said he felt "normal" afterward, so if Wednesday's throwing session goes well, he could be close to returning to practicing without limitation.

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