"Well, of course one thing a lot of people are confused about, he steps a little bit toward left field with his front foot. But his weight is on the back foot when he starts. And then when he drives forward, he drives his weight off the back foot onto the front foot. And his back hip always goes with his hands. In other words, when his hands start here, his hips go up there with it. This is why he drives the ball, and stays on top of the ball. If he were to dip, like this, he would hit a lot of fly balls. But when he comes forward, he gets up on top by bringing the back foot. See that back foot, how he brings? And it makes a short stride. He finishes up with a stride about like this, rather than a big long stride. And this is important, because that keeps him on top of the ball, and that's why he hits a lot of line drives. He watches the ball, and he's got great hands. One thing: he'll be fooled on a ball, and he'll be like this, but his bat is always back. That way he can pull the bat at the ball. This is one of the things that makes him a great hitter."
January 1, 1970
https://en.wikiquote.org/wiki/Roberto_Clemente