The Reds have designated righty Brett Marshall for assignment, reports John Fay of the Cincinnati Enquirer (via Twitter). With the move, the club opened a 40-man spot for recently-recalled outfielder Kristopher Negron.
Marshall, 24, threw 12 innings last year for the Yankees in his only MLB stint. Designated to make room for Carlos Beltran, Marshall was claimed by the Cubs and then the Reds. Since working back from a finger injury, he has struggled in 21 1/3 frames over seven starts at Triple-A for the Reds, working to a 10.97 ERA with 5.9 K/9 and a troubling 11.4 BB/9.