There's a video showing Gregg Maddux warming up before a game, his pitching coach looking on. His delivery was perfectly relaxed, and exactly the same each time. There was a footprint inn the sand where his drive foot came down on the follow through. Same exact spot every time. In games, Maddux had exactly the same footwork as in his warm-up. This allowed him to control the bend of his 88 mph fastball within a couple inches of where he wanted it. He could bend it about a foot left or a foot right, and hit the glove almost every time. He could also vary the speed of his pitches, vary his tempo, and of course he was a great fielder. As a result, hitters could not wait for a "pitch to hit," because within a couple pitches it would be strike two. Maddux rarely "wasted" a pitch because his excellent movement got lots of whiffs and weak contact. When you see other "finesse" pitchers, even when everything's working, they still don't have the deadly precision of Gregg Maddux. And Maddux had very few days when his precision failed him. He wasn't unhittable, but for about a decade he almost always gave his team a chance to win.