The Reds recalled Roa from Triple-A Louisville and placed him on the 60-day injured list with a right shoulder sprain.
Roa hadn't pitched at Triple-A since Aug. 2 and landed on Louisville's 7-day IL before the Reds called him up and placed him on the 60-day IL for the purpose of opening up a spot on the 40-man roster. As a result of the transaction, the 25-year-old's season officially comes to an end. He turned in a 5.55 ERA and 47:30 K:BB over 48.2 innings covering four starts and 19 relief appearances this season with Louisville.