The Pirates announced that they have designated right-hander Phil Irwin for assignment in order to clear a 40-man roster spot for Josh Wall, who was claimed off waivers from the Angels (Twitter link).
Irwin, 27, made one start for the Bucs in 2013, allowing five runs (four earned) in 4 2/3 innings. That start marks the lone Major League appearance for the former 21st-round draft pick. Irwin first reached Triple-A as a 25-year-old and spent 10 innings at that level last year as a 26-year-old. He’d been solid there until this season, where he has surrendered 21 runs in 21 2/3 innings.