...how? The alternative to a hit thought a normal shift is an out into a heavy shift. In both cases, the HR-BB-K totals remain the same. Incentives. More and more guys have responded to the shift with trying to hit OVER the shift. That's more uppercut swings, with more Ks, BBs, and dongs. Raise the value of a single, and you see more changed approaches. But unlike hitting it the other way, this is a change that guys have shown more ability to actually implement. I mean, that makes sense, but I'm not convinced that the uppercut change versus opposite field change is based on an ABILITY to impliment as opposed to a WILLINGNESS to impliment. And what were you hinting at with the "raise the value of a single" comment. I wasn't sure what you were referring to. EDIT: I'd also argue that shifting is a responce to the launch angle revolution, and not the cause of it.