Murfee experienced soreness in his surgically repaired right elbow following his rehab appearance with Single-A Fayetteville on Thursday and will be held back from throwing for another day or two, MLB.com reports.
The Astros haven't pulled Murfee off his rehab assignment, but it's possible he doesn't make his next appearance until later this week or next week while he waits for the soreness to fully subside. In his first outing since undergoing Tommy John surgery last July, Murfee gave up four earned runs on three hits and one walk while retiring just one batter in his 19-pitch appearance with Fayetteville.