Allard was recalled from Triple-A Round Rock on Wednesday.
Allard was demoted to Round Rock in mid-June and will return to the majors after allowing three earned runs and striking out 14 in 9.1 frames in the minors. The left-hander has appeared in seven games for the Rangers this year and has a 5.06 ERA, 1.06 WHIP and 12:3 K:BB over 16 innings.