cabbagedad posted:If the incoming pitch is at a 6-10 degree angle and the swing is 10-20 degrees, by definition, wouldn't that result more often in topspin than backspin? I realize that where on the ball contact occurs is also a factor in this equation. Just trying to understand the math of your statement.
In MLB swings the bat head generally goes under the plane of the incoming pitch, and will generally hit under the (horizontal) center of the ball.
If you hit anywhere under the center, the ball goes up, and it has backspin.
