Astros reliever Anthony Bass threw live batting practice at the team's spring training complex Thursday, and is making significant progress in his recovery from an intercostals strain.

"The fact he got on the mound lets me know he's close to getting on a rehab," manager Bo Porter told MLB.com Friday. "I've never been one to care much about a Major League guy rehabbing that was there for injury purposes. I'm more concerned about his oblique not hindering him to be able to throw all of his pitches, cover the bases and do all the things in which he would need to do."

There still isn't a clear timetable for his return to action, but Bass could move fairly quickly once he goes out on rehab.