He's not coming back regardless of the rest of the season's performance. The Royals suck and can afford to keep him all year. As stated by others, the problem wasn't management not forseeing this success this quick in Sisco, it was the moronic gamble they took when complete garbage like Stephen Randolph was (temporarily) given a 40-man spot instead. On the other hand, I'll bet you dollars to doughnuts that Sisco's success results from being a power lefty facing a few batters only one time in a game. The novelty works in his favor. Using him this way for an entire season will stunt his growth unless the Royals plan to use him as a power closer, which diminishes his long-term value, which would be as a #1 or #2 starter. A top line major league starter needs to develop several good pitches and to learn how to adjust during a game as batters in the league learn his stengths and weaknesses. Pitching in the minors would give Sisco that experience. His current workload won't. And if KC wanted to return him to the minors next year to upgrade his skills, how would Sisco react? Not very maturely, I think. At this rate, neither the Cubs nor the Royals will see Sisco as a top line starter. If KC wants to send him to the minors this year to maximize his long-term potential, they will have to pay the Cubs "Royally" for the privilege.