Bailey experienced discomfort while increasing his throwing workload as he prepared for Spring Training. Exams indicated that the ulnar collateral ligament and flexor mass tendon are healthy. Bailey had previously had surgery in both areas.
The Reds expect Bailey to resume throwing in 4-6 weeks. He is likely to begin the season on the disabled list.
Bailey, 30, returned July 31 after missing 15 months because of Tommy John surgery on his right elbow. In six starts, he was 2-3 with a 6.65 ERA before he was shut down again with right biceps tenderness.
Since going on the DL with his flexor mass tendon tear in August 2014, Bailey has been limited to eight starts.