Giants' Clayton Blackburn: Designated for assignment

Blackburn was designated for assignment by the Giants on Tuesday.

Blackburn was DFA'd in order to make room on the 40-man roster for Tim Federowicz, who was called up to serve as backup catcher to Nick Hundley while Buster Posey is on the 7-day DL. He posted a 4.36 ERA with a 101:35 K:BB across 136.1 innings at Triple-A last season. The 24-year-old will likely garner some interest on waivers.