The Diamondbacks have designated outfielder Danny Dorn for assignment, Zach Buchanan of the AZCentral.com reports on Twitter. His 40-man spot was needed for the activation of Jhoulys Chacin.
Dorn, 31, reached the majors for the first time this year, but managed just five hits (one for extra bases) in his 32 turns at bat. But he does have an extensive track record of solid production in the upper minors, and has raked to the tune of a .386/.444/.618 slash in his 305 Triple-A plate appearances this season.