Right-handers Frank Duncan, Tyler Eppler, Edgar Santana and lefties Cody Dickson and Jared Lakind join Cumpton, Sadler and Sanchez on the list of non-roster pitchers invited to big league camp.
The Pirates will bring catchers Jin-De Jhang, Jacob Stallings and Christian Kelley to camp along with Williams. Pittsburgh also invited infielders Newman, Rogers, Erich Weiss and Eric Wood as well as outfielders Barrett Barnes, Danny Ortiz and Meadows.
The group announced Monday is loaded with Minor Leaguers from within Pittsburgh's ranks and light on veterans who may compete for spots on the Opening Day roster.