The Royals recalled Bowlan from Triple-A Omaha on Tuesday.
The right-hander allowed four runs over 2.2 frames in a spot start for Kansas City in late April, but he's otherwise been with Omaha this season. Bowlan has a 4.93 ERA, 1.40 WHIP and 80:30 K:BB over 84 innings at Triple-A this season. It appears he's joining the big club as a reliever for the stretch run, considering he worked out of the bullpen in his last four appearances for Omaha.