| In baseball, how does a pitcher throw a curveball?
A successful major league batter gets a hit only 30 percent of the time he comes to bat. One of the ways pitchers lower these chances even further is by throwing a curveball. A curveball is a pitch that appears to be moving straight toward home plate but that is actually moving down and to the right or left by several inches. Obviously, a pitch that curves is going to be harder to hit than a fastball that is moving straight.
There are two basic factors involved in creating a curveball:
Proper grip
Air resistance
Any baseball pitch begins with how the pitcher grips the ball. To throw a curveball, a pitcher must hold the baseball between his thumb and his index and middle fingers, with the middle finger resting on the baseball seam. When the pitcher comes through his motion to throw the ball, he snaps his wrist downward as he releases the ball, which gives the ball topspin. If the pitcher throws properly, the back of the his hand will be facing the batter at the end of the motion. The ball will break down and away from a right-handed batter if thrown by a right-handed pitcher.
The spinning action created when the pitcher releases the ball is the secret behind the curveball. This spinning causes air to flow differently over the top of the ball than it does under the ball. The top of the ball is spinning directly into air and the bottom of the ball is spinning with the air flow. The air under the ball is flowing faster than air on top of the ball creating less pressure, which forces the ball to move down or curve. This imbalance of force is called the Magnus Effect, named for physicist Gustav Magnus, who discovered in 1852 that a spinning object traveling through liquid is forced to move sideways.
Adding to the air pressure exerted on the ball are the 108 red stitches that hold the cover on the ball. Because they are raised, the stitches increase the amount of friction created as the air passes around the ball and places more air pressure on top of the ball. A well thrown curveball can move as much as 17 inches either way. If you’ve ever seen a batter jump out of the way of a baseball that ends up crossing over the plate, you’ve seen a good curveball.
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choosing a good Baseball Bat!Silent Onechoosing a good Baseball Bat!
Ash
Most wood bats today are made from Northern White Ash generally harvested in Pennsylvania and Upstate New York. It is graded for quality with straight grain being the most important criteria. (Southern Ash grows too quickly and is not as dense). Major League grade is of course, the best and is also in short supply. Most of what you see that’s labeled or sold as Pro-Stock or some similar name is actually Minor League wood or a lesser grade and generally is found for around $40. Of course, there are other levels of quality down to the $20. range. They are known by grades called high school, trophy and retail (don’t expect to see the grades labeled). Generally, they are not of very good quality and only worth purchasing if money is an issue. (Better than not having any wood at all). You won’t find these on our site. We only work with quantities in straight ash.
Maple
Here is another material that has recently gained some Major League notoriety. They cost a bit more, but when made properly AND from the right material known as Rock or Sugar Maple, it is absolutely worth the extra money simply because it tends to outlast ash bats many times over. So in the long run, because they last longer, they’re less expensive.
So why don’t all major Leaguers use maple? Actually, as they are becoming more well known, more players are now using them. Just like in your own dugout, players will try out each other’s new bats. And since they have such good “feel”, some players will switch while other players having the superstitions that many ballplayers tend to have, will never change even the color much less the type of bat that they use. Also, since Major leaguers aren’t concerned with saving money on bat breakage, economy is not the issue that it is for the rest of us.
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