"Barring any setback he should be ready to go Thursday or Friday," manager Bo Porter said. "We'll let him throw today, and hopefully we don't have any issues and we're ready to plug him back in the rotation."
Keuchel had been 8-5 in 15 starts for the Astros with a 2.78 ERA.
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. Mike Vernon is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.