The Royals recalled Black from Triple-A Omaha on Friday.
Black will take the 26-man roster spot of Aaron Bummer, who has elected free agency in lieu of heading to Triple-A. Black has pitched in 12 games out of the bullpen for Kansas City this season, posting a 3.57 ERA, 1.70 WHIP and 15:11 K:BB across 17.2 frames.