The Brewers announced on Thursday night the club has acquired pitcher Jhan Mariñez from the Rays in exchange for cash. To create room on the 40-man roster, the Brewers designated pitcher Michael Kirkman for assignment.
Kirkman, 29, gave up a run in his only appearance in the majors with the Brewers. The Brewers had claimed him off waivers from the Padres last week.
Mariñez, 27, pitched 3 2/3 innings for the Rays after starting the season at Triple-A Durham, yielding a run on two hits with no walks and three strikeouts.