You might as well call this “strategies for pitching”, period.
My wise and wonderful pitching coach told me this: “Move the ball around—high, low, inside, outside, work the corners, change speeds, throw strikes, and stay away from the middle of the plate.” The secret of strategic pitching can be boiled down to this: Figure out what the batter is looking for, and don’t give it to him. Know the batter’s strengths and weaknesses and pitch accordingly, and when in doubt feed him a changeup—there’s a whole basketful to choose from.
As for the “shuuto”—I remember a guy named Shigetoshi Hasegawa who used to pitch for the Seattle Mariners and a couple of other teams. He was a late-inning reliever, even a closer, and when that pitch was working for him he was lights out. The pitch might well be described as a changeup screwball, and he was not the first one to throw it; a Cincinnati Reds hurler named Joey Jay may have been the first to come up with it. It doesn’t put as much stress and strain on the arm as the regular screwball, and once a pitcher has the hang of it and can throw it for strikes he can do very well with it. 8)