Pirates' Elvis Alvarado: Designated for assignment

The Pirates designated Alvarado for assignment Wednesday.

The move creates a spot on the 40-man roster for Adam Frazier, whose signing was officially announced. Alvarado has yet to appear in a big-league game but was given a major-league contract by the Pirates earlier this offseason. If he clears waivers, he'll be in camp as a non-roster invitee.