The Cubs have designated Mitch Atkins for assignment, according to MLB.com's Carrie Muskat (via Twitter). The DFA was part of a series of moves in Chicago, as the team also placed Tyler Colvin and Geovany Soto on the disabled list.
Atkins, who turns 25 next Friday, appeared in five games for the Cubs this year. The right-hander struck out a batter per inning, but recorded a 6.30 ERA and allowed 18 baserunners in just ten innings pitched. Atkins had more success for Triple-A Iowa, with a 3.63 ERA over 106.2 IP.