Who says you’re washed up? Throw, baby, throw. But as many times as hairline-challenged Costner brings the heat, the score’s the same: who cares? Baseball movies have two core pitches: “Bull Durham,” basically wise-ass parody, and “Field of Dreams” and “The Natural,” in which parent-angst turns into heroism. Anywhere in between and you’re stuck with schmaltzy Kev, who hangs a curve.