Twenty of the Pirates' 24 pitchers on the 40-man roster will participate in the team's voluntary minicamp next week in Bradenton, Fla.
The lone exceptions on the list released by the team this afternoon are veterans Matt Morris and Damaso Marte, as well as two relievers who pitched in winter ball: Franquelis Osoria and Juan Perez.
Two non-roster pitchers, Adam Bernero and Marino Salas, also will attend.
The three catchers will be Ronny Paulino, Ryan Doumit and Michel Hernandez.
Minicamp workouts will run Tuesday through Friday.
More details in tomorrow's Pittsburgh Post-Gazette.