The Pirates have designated right-handers Dugan Darnell and Michael Darrell-Hicks for assignment, the team announced Thursday. Pittsburgh also reinstated catcher/first baseman Endy Rodriguez and utilitymen Ronny Simon and Emmanuel Valdez from the 60-day injured list.

Former top infield prospect Liover Peguero, who was placed on waivers earlier in the week, went unclaimed and has been assigned outright to Triple-A Indianapolis. Jason Mackey of the Pittsburgh Post-Gazette reports, however, that Peguero will reject the assignment to become a free agent. Meanwhile, Alex Stumpf of MLB.com reports that Pittsburgh will select the contract of minor league righty Ryan Harbin to its 40-man roster.

More to come.