Per a team press release, the Pirates have made the
Francisco Liriano Jeff Karstens signing official. To make room on the 40-man roster, they designated Zach Stewart for assignment. They had just acquired Stewart for Kyle Kaminska back in November.
Pirates officially sign Karstens, DFA Zach Stewart
The Pirates made their signing of Jeff Karstens official and designated newly acquired Zach Stewart for assignment to make room on the 40-man roster