Zulueta was recalled by the Reds on Thursday, Francys Romero of BeisbolFR.com reports.
Zulueta has spent the majority of his season at Triple-A Louisville but will be back to provide depth in the Reds' bullpen. He will be serving as the 27th man in Friday's doubleheader against the Brewers, so it's possible he's sent back down immediately after the twin bill. Across 11.2 innings in the majors, he's maintained a 3.09 ERA and 1.20 WHIP with an 11:5 K:BB.