Atlanta designated Logue for assignment Sunday.
The left-hander will give up his spot on the 40-man roster to right-handed reliever John Brebbia, whom Atlanta signed to a one-year deal Sunday. Logue was added to the roster in late July and was called up on two occasions by the big club, but he never made an appearance for Atlanta. He's been a standout performer as a swingman at Triple-A Gwinnett this season, logging a 2.68 ERA, 1.08 WHIP and 86:27 K:BB across 90.2 innings.