A.J. Burnett has landed on the disabled list with a strained right calf. The Pirates have not released any indication of how severe the injury is, which is retroactive to June 9.
The Pirates will need to name a replacement by Saturday.
Prior to landing on the disabled list, Burnett had made 14 starts compiling a 4-6 record and a 3.12 ERA. Once known as fragile the 36-year-old Burnett had pitched 186 or more innings in each of the previous five seasons.