The Athletics have designated Chad Gaudin for assignment, reports Jane Lee of MLB.com (via Twitter).
The DFA is part of a series of moves for the Athletics, who placed Justin Duchscherer on the disabled list and optioned Josh Donaldson to the minors. The team also activated Kurt Suzuki from the DL, promoted Henry Rodriguez and selected Cedrick Bowers.
Gaudin signed with the Athletics in late March, and has appeared in 12 games for Oakland this season. Although he posted solid rates of 10.4 K/9 and 2.6 BB/9, he was hit hard, allowing 17 runs in 17.1 IP (8.83 ERA).