The Royals recalled Cameron from Triple-A Omaha on Wednesday.
Cameron is set to make his major-league debut Wednesday with a start against the Rays, filling in for the injured Cole Ragans (groin). The left-handed Cameron has posted a 3.22 ERA, 1.04 WHIP and 27:8 K:BB in 22.1 innings through his five starts with Omaha this season. Kansas City expects Ragans to be ready for his next turn, so as things stand right now it's likely to be just a spot start for Cameron before he returns to Omaha.