Velasquez (biceps) will make a rehab start Wednesday with Double-A Reading, Todd Zolecki of MLB.com reports.
Velasquez is hoping that he will only need one rehab start before being able to rejoin the Phillies. The 24-year-old has been solid early on, posting a 5-2 record with a 3.65 ERA and 1.26 WHIP through 12 starts and will look to keep it rolling once he is back to full strength.